Mastura owns a small food stall just outside the Alor Setar airport. She noticed that the number of flight delays do influence her revenue for the month. If there are more delays, the higher would be her revenue. Using a Linear Regression equation, predict Mastura's revenue for the month if the departure delays for this month is 49. Write the linear equation, and state the predicted revenue in RM. Coefficient s Standard Error t Stat P-value 2.42E-04 Intercept 729.48138 0.4832 6.19291 27.5141 9 Delays 8.9014135 0.924899 3.04E-07

The value of sin 150° is -1/2. and cos 150° is √3/2 (note that it is negative because it is in the second quadrant).

We can use the unit circle to find the exact values of sin 150° and cos 150°.

First, let's consider sin 150°. Since 150° is in the second quadrant, we know that sin 150° is negative. Also, we know that the sine function is periodic with a period of 360°, which means that sin 150° is equal to sin (150° - 360°) = sin (-210°). Now we can use the reference angle of 30° (since 210° is 30° past the 180° mark in the second quadrant) to find the exact value of sin 150°:

sin 150° = sin (-210°) = -sin 30° = -1/2

Therefore, sin 150° is -1/2.

Next, let's consider cos 150°. Since 150° is in the second quadrant, we know that cos 150° is negative. Also, we know that the cosine function is periodic with a period of 360°, which means that cos 150° is equal to cos (150° - 360°) = cos (-210°). Now we can use the reference angle of 30° to find the exact value of cos 150°:

cos 150° = cos (-210°) = cos 30° = √3/2

Therefore, cos 150° is √3/2 (note that it is negative because it is in the second quadrant).

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The solution to the given Partial differential equation is u(x,y) = y

What is Partial differential equation?

A partial differential equation (PDE) is a mathematical equation that involves two or more independent variables, an unknown function, and its partial derivatives with respect to the independent variables.

To solve the given partial differential equation using the method of characteristics, we need to find the solution along the characteristic curves.

Let dx/dt = x, dy/dt = y

Using the chain rule, we have:

∂u/∂x = ∂u/∂t * dt/dx = ∂u/∂t * 1/x

∂u/∂y = ∂u/∂t * dt/dy = ∂u/∂t * 1/y

Substituting these values in the given PDE, we get:

x * (∂u/∂t * 1/x) + y * (∂u/∂t * 1/y) = 0

∂u/∂t = 0

This means that u is constant along the characteristic curves, which are given by:

dx/x = dy/y

Integrating both sides, we get:

ln|x| = ln|y| + C1

x = C2 * y

where C1 and C2 are integration constants.

Using the boundary condition u(1,y) = y, we get:

u(x,y) = y = C2 * y

C2 = 1

Therefore, the solution to the given PDE is u(x,y) = y

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This equation 8^x = 64 rewritten in logarithmic form is x = log₈(64)

From the question, we have the following parameters that can be used in our computation:

8^x = 64

Take the logarithm of both sides

So, we have

xlog(8) = log(64)

Divide both sides by log(8)

So, we have

x = log₈(64)

Hence, the equation is x = log₈(64)

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we can conclude that there is a significant difference between the observed and expected frequencies of race categories.

To determine if the housing complex's distribution of residents by race is significantly different from the population distribution, we can perform a chi-square goodness-of-fit test.

First, we need to calculate the expected frequencies for each race category based on the population distribution. The expected frequencies can be calculated as follows:

Expected frequency for Hispanics = 0.28 x 94 = 26.32
Expected frequency for Blacks = 0.24 x 94 = 22.56
Expected frequency for Whites = 0.35 x 94 = 32.9
Expected frequency for Asians = 0.12 x 94 = 11.28
Expected frequency for Others = 0.01 x 94 = 0.94

We can then calculate the chi-square statistic as follows:

χ2 = Σ (O - E)2 / E

where O is the observed frequency and E is the expected frequency for each race category.

Using the data from the table, we can calculate the chi-square statistic as follows:

χ2 = [(212-11.28)2/11.28] + [(202-26.32)2/26.32] + [(270-32.9)2/32.9] + [(22-22.56)2/22.56] + [(0-0.94)2/0.94] = 52.06

We have 5 categories and 1 parameter estimated (the expected frequencies), so the degrees of freedom for the test are df = 5 - 1 = 4.

Using a chi-square distribution table with 4 degrees of freedom and a significance level of 0.05, the critical value is 9.49.

Since our calculated chi-square statistic (52.06) is greater than the critical value (9.49), we can reject the null hypothesis that the housing complex's distribution of residents by race is consistent with the population distribution. Therefore, we can conclude that there is a significant difference between the observed and expected frequencies of race categories.

For the follow-up analysis, we can perform post-hoc tests to determine which race categories have significantly different distributions. One way to do this is to perform chi-square tests of independence between the housing complex's distribution and the population distribution for each race category. We can also calculate the standardized residuals for each race category to determine which categories have the largest contributions to the overall chi-square statistic.

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The amount of money in the account at the end of 25 years will be:

$38,419.83 if interest is compounded semiannually

$39,020.28 if interest is compounded quarterly

$39,214.44 if interest is compounded daily

$39,243.86 if interest is compounded continuously

We have,

We can use the formula for compound interest.

[tex]A = P(1 + r/n)^{nt}[/tex]

where:

A is the amount of money in the account after t years

P is the initial principal amount (the amount invested)

r is the annual interest rate (as a decimal)

n is the number of times the interest is compounded per year

t is the number of years

Now,

P = $16,000

r = 4% = 0.04

To find the amount of money in the account with different compounding periods, we need to plug in different values for n.

If interest is compounded semiannually, we have n = 2 and t = 25:

So,

A = 16000(1 + 0.04/2)^(2 x 25)

A = $38,419.83

If interest is compounded quarterly, we have n = 4 and t = 25:

A = 16000(1 + 0.04/4)^(4 x 25)

A = $39,020.28

If interest is compounded daily, we have n = 365 (assuming 365 days in a year) and t = 25:

A = 16000(1 + 0.04/365)^(365 x 25)

A = $39,214.44

If interest is compounded continuously, we have n = infinity and t = 25:

A = 16000e^(0.04 x 25)

A = $39,243.86

Therefore,

The amount of money in the account at the end of 25 years will be:

$38,419.83 if interest is compounded semiannually

$39,020.28 if interest is compounded quarterly

$39,214.44 if interest is compounded daily

$39,243.86 if interest is compounded continuously

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The juice can will have a minimum material used if the radius of the cylinder is  1.8533 in and the height is 3.7069 in.

Let the radius of the cylindrical can be r in

We are given that the can holds 40 in³ of juice

Hence from the formula of cylinder, we have

πr² X height = 40

or, height = 40/πr²

The total surface area of a cylinder is given by

2π X radius X height + 2π X (radius)²

= 2πr X 40/πr²  +  2πr²

= 80/r  +  2πr²

Now we need to minimize the above equation

Hence differentiating with respect to r and equating to 0 we get

-80/r² + 4πr = 0

or, -20/r² + πr = 0

or, -20 + πr³ = 0

or, r³ = 20/π

or, r = ∛(20/π)

or, r = 1.8533

Now differentiating again with respect to r we get

160/r³ + 4π

Putting r = ∛(20/π) gives us

8π + 4π = 12π

Since the above result is positive, r = 1.8533 in is the value of the radius for which the surface area is minimized

Hence height is 3.7069 in

Hence the juice can will have a minimum material used if the radius of the cylinder is  1.8533 in and height is 3.7069 in.

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Correct Question

(Image Attached)

The side lengths do indeed form a triangle

The type of triangle is an obtuse triangle.

In order to ascertain if given side lengths culminate in a triangle, recourse may be taken to the triangle inequality theorem. The said theorem stipulates, as a prerequisite for determining any given shape as a triangle, that it is contingent upon the addition of two sides being greater than the length of the third one.

The sums of two sides are greater than the third for all the combinations so this is indeed a triangle.

We can use the Pythagorean theorem to see the type of triangle.

c ² = 10 x 10 = 100

b ² + a ² = 5² + 6² = 61

c² > b ² + a ²

So this is an obtuse triangle.

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1. a) The prime factorization of 64 is 2^6 and the prime factorization of 72 is 2^3 × 3^2. The common factor is 2^3, so the GCF of 64 and 72 is 8.  b) The GCF of 2a^2 and 12a is 2a.  c) The GCF of 4x^2 and 6x is 2x.

2. a) Factored form: 3(x - 4), GCF = 3  b) Factored form: 5(13y - x), GCF = 5  c) Expanded form: 3x^2 + 12x + 9, GCF = 3

3. a) 3(p - 5), check: 3p - 15 b) 3(7x - 3)(x + 2), check: 21x^2 - 9x + 18 c) 6(y + 1)(y + 5), check: 6y^2 + 18y + 30

4. A trinomial expression with a GCF of 3n is 3n(x^2 + 4x + 3). Factoring the expression, we get 3n(x + 3)(x + 1).

Let us discuss this in detail.

1. a) The GCF of 64 and 72 is 8.
  b) The GCF of 2a^2 and 12a is 2a.
  c) The GCF of 4x^2 and 6x is 2x.

2. a) 3x - 12 is in expanded form, GCF = 3.
  b) 5(13y - x) is in factored form, GCF = 5.
  c) 3x^2 + 12x + 9 is in expanded form, GCF = 3.

3. a) Factoring 3p - 15 gives 3(p - 5), Check: 3(p - 5) = 3p - 15.
  b) Factoring 21x^2 - 9x + 18 gives 3(7x^2 - 3x + 6), Check: 3(7x^2 - 3x + 6) = 21x^2 - 9x + 18.
  c) Factoring 6y^2 + 18y + 30 gives 6(y^2 + 3y + 5), Check: 6(y^2 + 3y + 5) = 6y^2 + 18y + 30.

4. A trinomial expression with a GCF of 3n could be 3n(x^2 + y^2 + z^2). Factoring this expression gives 3n(x^2 + y^2 + z^2), which is already in factored form.

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Answer:

No

Step-by-step explanation:

Hope this helps :)

There are 64 functions from set A to set B.

To determine how many functions there are from A = {1, 2, 3} to B = {a, b, c, d}, you can use the following step-by-step explanation:

1. Understand that a function maps each element of set A to exactly one element in set B.
2. Notice that set A has 3 elements, and set B has 4 elements.
3. For each element in set A, there are 4 choices in set B it can be mapped to.
4. Therefore, the total number of functions is equal to the product of the number of choices for each element in set A, which is 4 × 4 × 4 = 64.

So, there are 64 functions from A = {1, 2, 3} to B = {a, b, c, d}.

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The answer to the question is 'c. 246'. This is calculated by determining the total number of ways to form the committee, subtracting the ways in which only seniors can be selected to ensure at least one junior is included.

This question is related to combinatorics, a branch of Mathematics that deals with counting, arrangement, and permutation. Given we have 6 seniors and 4 juniors, and we need to select a committee of 5 members with at least one junior, we can approach it in the following way:

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So, the recursive formula for H(n) is:

H(1) = 2

H(n) = H(n-1) + 12

A recursive formula is one that defines each term in a series by reference to the phrase(s) that came before it. The first term, or firsts, in the series must always be stated in recursive formulae. A recursive algorithm is one that uses "smaller (or simpler)" input values to call itself and gets the result for the current input by performing straightforward operations on the value that was returned for the smaller (or simpler) input.  

And the Fibonacci sequence is the most well-known recursive formula. The following is the Fibonacci sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21,… Keep in mind that each number in the series is the product of the two numbers before it. For instance, the total of the two terms before it, 5 and 8, is 13.

Recursive formula for H(n), we need to find the first term and the common difference.

H(1) = -10 + 12(1) = 2

H(2) = -10 + 12(2) = 14

The common difference between H(1) and H(2) is 14 - 2 = 12.

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Correct Question:

H(n) = -10 + 12n

Complete the recursive formula of h(n).

h(1) =

h(n) = h(n-1)+

Answer: might be the 2nd one

Step-by-step explanation:

The Quasilinearization Method is defined as a numerical method used to approximate the solutions of nonlinear differential equations. In the context of first-order initial value problems (IVPs), a maximal solution is the largest possible solution that exists for the given initial value, while a minimal solution is the smallest possible solution that exists for the given initial value.

In other words, a maximal solution is a solution that extends as far as possible beyond the given initial value without encountering any singularities or breaking down, while a minimal solution is a solution that is defined only on a minimal interval around the initial value, beyond which it cannot be extended without encountering a singularity or breaking down.

It is worth noting that not all first-order IVPs have both maximal and minimal solutions, as some may have either no solution, a unique solution, or multiple solutions that overlap or intersect.

However, if a maximal solution and a minimal solution do exist for a given IVP, they are guaranteed to be unique and continuous.

In summary, the Quasilinearization Method can be used to approximate both the maximal and minimal solutions of a first-order IVP, which represent the largest and smallest possible solutions that exist for the given initial value.

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Answer: 40

Step-by-step explanation:

38+ 52=90

230-90=40

Answer:

Wyatt walks 3 miles per day for 6 days, so he walks a total of:

3 x 6 = 18 miles

Aaliyah walks 4 1/2 miles each day for 6 days, so she walks a total of:

4 1/2 x 6 = 27 miles

To find how many more miles Aaliyah walks than Wyatt, we can subtract Wyatt's total distance from Aaliyah's total distance:

27 - 18 = 9 miles

Therefore, Aaliyah will walk 9 more miles than Wyatt in 6 days.

Step-by-step explanation:

The solution of the system of equations 3x − 3y = 6 and 2x + 6y = 12 is x = 3 and y = 1, hence option is b is correct.

We must eliminate one of the variables by adding or subtracting the two equations in order to solve for (x, y) using elimination. Let us multiply the equation by 2 and 3 respectively so that the equations becomes,

6x - 6y = 12

6x + 18y = 36

Now, using the equations,

24y = 24

So, y = 1. Substituting this back into either of the original equations gives:

3x - 3(1) = 6

3x = 9

So, x = 3. Therefore, the answer of equation is (b) (3, 1).

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The test statistic for this sample is -3.861, and the p-value for this sample is 0.0001. The p-value is less than the significance level α.

To test the claim (Ha) at a significance level of α = 0.005, with the given information, we will first find the test statistic and then the p-value.

1. Calculate the sample proportions: p1 = 31.8% successes in a sample of size n1 = 600, and p2 = 44.6% successes in a sample of size n2 = 314.

2. Find the difference between the sample proportions: d = p1 - p2.

3. Calculate the pooled proportion: P = (p1 * n1 + p2 * n2) / (n1 + n2).

4. Find the standard error: SE = sqrt(P * (1 - P) * (1/n1 + 1/n2)).

5. Calculate the test statistic (z): z = (d - 0) / SE.

Using the given information, the test statistic is -3.861.

Now, let's find the p-value:

6. Using the standard normal distribution table or calculator, find the p-value corresponding to the test statistic.

The p-value for this sample is 0.0001.

Now, compare the p-value to the significance level α:

The p-value (0.0001) is less than the significance level α (0.005).

Therefore, the test statistic for this sample is -3.861, and the p-value for this sample is 0.0001. The p-value is less than the significance level α.

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False. An intrinsic reward is enjoying what one does for its own sake, while an extrinsic reward is an inducement such as money, grades, or recognition.

Intrinsic and extrinsic rewards are two different types of motivational factors that can influence behavior.

Intrinsic rewards are those that come from within oneself, such as the enjoyment of doing a task or the sense of accomplishment that comes from completing it. These rewards are inherently satisfying and enjoyable, and they motivate people to continue doing the task or activity because of the pleasure they derive from it. For example, a person may engage in a hobby like playing music, painting, or playing a sport simply because they find it enjoyable and rewarding in itself.

On the other hand, extrinsic rewards are external motivators that are used to induce or encourage behavior. These rewards are typically tangible, such as money, grades, or recognition, and are given as a result of completing a task or activity. They are designed to incentivize individuals to perform specific actions, often with the aim of achieving a specific goal or outcome. For example, a person may work hard at their job in order to earn a promotion or raise, or may study hard in school to earn good grades.

Intrinsic and extrinsic rewards can both be effective motivators, but they operate in different ways. Intrinsic rewards are powerful because they come from within the individual and are based on personal enjoyment and satisfaction. Extrinsic rewards, on the other hand, are often seen as less powerful and may only work in the short term, because they are not inherently satisfying and may not motivate people to continue performing the task or activity once the reward is removed. However, when used effectively, extrinsic rewards can be a useful tool for motivating people and achieving specific outcomes.

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The solution for y' is:

y' = (cosy - 4x^3 y + 5xy'') / (x^4 - 5)

To find y', we will differentiate both sides of the equation with respect to x using the product rule:

First, we differentiate the left side:

d/dx (x^4 y - 5xy') = d/dx (siny + 11)

Using the product rule, we get:

4x^3 y + x^4 y' - 5y' - 5xy'' = cosy * dy/dx

Next, we can simplify the right side since the derivative of a constant is zero:

4x^3 y + x^4 y' - 5y' - 5xy'' = cosy

Finally, we solve for y':

x^4 y' - 5y' - 5xy'' = cosy - 4x^3 y

y'(x^4 - 5) = cosy - 4x^3 y + 5xy''

y' = (cosy - 4x^3 y + 5xy'') / (x^4 - 5)

Therefore, the solution for y' is:

y' = (cosy - 4x^3 y + 5xy'') / (x^4 - 5)

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The solution is, the solutions using the Zero Product Property: is x =8 and -5.

The expression to be solved is:

(x-8) (x + 5) = 0

we know that,

The zero product property states that the solution to this equation is the values of each term equals to 0.

now, we have,

(x-8) (x + 5) = 0

i.e. we get,

(x-8) × (x + 5) = 0

so, using the Zero Product Property:

we get,

(x-8) = 0

or,

(x + 5) = 0

so, we have,

x = 8 or, x = -5

The answers are 8 and -5.

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Yes, Step 1 is correct.

No, Step 2 is not correct.

We have to given that;

Simone wants to create a graph of the function g (x) = 1 /(18e¹⁰⁺⁷ˣ) as a transformation of the graph of f (x) = eˣ.

Now, We can simplify as

g (x) = 1 /(18e¹⁰⁺⁷ˣ)

g (x) = (18e¹⁰⁺⁷ˣ) ⁻¹

g (x) = 1/18 e⁻¹⁰⁻⁷ˣ

Hence, We get;

To solve the expression Step 2 is incorrect.

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To solve a problem involving missing addends or minuends in homeroom 232, students can use the concept of equivalencies to create an equation.

Let's say we have the equation A + B = C, where A is the missing addend or minuend, B is a known value, and C is the given sum or difference. To make this equation true, students can use algebraic manipulation to find the missing value (A). For example, if the equation is A + B = C, then A = C - B. By substituting the known values for B and C, students can determine the missing addend or minuend (A) and establish equivalencies between both sides of the equation. This will help them understand the relationships among the numbers and effectively solve the problem.

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The volume in gallons of the water cooler is 183.49 gallons

We know that the volume of a cylinder of radius R and height H is.

V = pi*R²*H

Where pi = 3.14

Here we know that the diameter is 2.5 ft, then the radius is:

R = 2.5ft/2 = 1.25ft

And the height is 5ft

So the volume is:

V = 3.14*(1.25ft)²*5ft = 24.53125 ft³

And we know that

1ft³ =  7.48 gallons

Then we can do a change of units to get:

24.53125*7.48 gal = 183.49 gal

That is the correct option.

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The integral expression [tex]\int\limits^4_{-4} {f(x)} \, dx[/tex] when evaluated has a value of 352/3

From the question, we have the following parameters that can be used in our computation:

[tex]\int\limits^4_{-4} {f(x)} \, dx[/tex]

The function f(x) is a piecewise function

When the functions are combined, we have

f(x) = 4 + 16 - x²

Evaluate the like terms

So, we have

f(x) = 20 - x²

So, we have

[tex]\int\limits^4_{-4} {f(x)} \, dx = \int\limits^4_{-4} {20 - x\²} \, dx[/tex]

Integrate the function

So, we have

[tex]\int\limits^4_{-4} {f(x)} \, dx = 20x - \frac{x^3}3|\limits^4_{-4}[/tex]

Expand the integral expression

This gives

[tex]\int\limits^4_{-4} {f(x)} \, dx = 20(4) - \frac{4^3}3 - 20(-4) + \frac{(-4)^3}3[/tex]

Evaluate the expression

So, we have

[tex]\int\limits^4_{-4} {f(x)} \, dx = \frac{352}{3}[/tex]

Hence, the solution is 352/3

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Answer:

Standard Form

ax^2 +bx + c = 0

Notice you can already solve for the y-intercept which is (0,4) or y=4

The probability that the number 1 appears less than 123 times, given that the number 4 appears exactly 128 times and the number 2 appears exactly 160 times, is approximately 0.9989

To solve this problem, we can use the binomial distribution with n=1000 and [tex]p=\frac{1}{6}[/tex] for each roll of the fair die.

Let X be the number of times the number 1 appears in 1000 rolls. Then X follows a binomial distribution with parameters n=1000 and [tex]p=\frac{1}{6}[/tex].

We want to find P(X < 123), given that the number 4 appears exactly 128 times and the number 2 appears exactly 160 times.

First, we can use the fact that the total number of rolls is 1000 to find the number of remaining rolls:

Remaining rolls = 1000 - (128 + 160) = 712

Next, we can find the number of rolls that are not 1:

Non-1 rolls = 1000 - X

We know that the number 2 appears exactly 160 times, which means that the number of non-2 rolls is:

Non-2 rolls = 1000 - 160 = 840

Similarly, the number of non-4 rolls is:

Non-4 rolls = 1000 - 128 = 872

Since all rolls are independent, we can find the probability that the number 1 appears less than 123 times by using the binomial distribution with parameters n=712 and [tex]p=\frac{5}{6}[/tex] (the probability that a roll is not 1). Thus, we have:

P(X < 123 | X=128, 2=160) = P(Non-1 rolls < 589)

= P(Binomial(712,[tex]\frac{5}{6}[/tex] ) < 589)

=0.9989

Therefore, the probability that the number 1 appears less than 123 times, given that the number 4 appears exactly 128 times and the number 2 appears exactly 160 times, is approximately 0.9989.

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The time necessary for p dollars to double when it is invested at interest rate r compounded annually is given by the formula:

t = (ln 2) / (r ln (1 + r))

When compounded monthly, the formula becomes:

t = (ln 2) / (12 r ln (1 + r/12))

When compounded daily, the formula becomes:

t = (ln 2) / (365 r ln (1 + r/365))

When compounded continuously, the formula becomes:

t = ln 2 / (r)

Note that ln is the natural logarithm function.

To use these formulas, you need to know the value of the interest rate r. For example, if r is 5%, then:

When compounded annually, t = (ln 2) / (0.05 ln 1.05) = 13.86 years
When compounded monthly, t = (ln 2) / (12 x 0.05 ln 1.0041) = 14.21 years
When compounded daily, t = (ln 2) / (365 x 0.05 ln 1.000137) = 14.27 years
When compounded continuously, t = ln 2 / (0.05) = 13.86 years

Therefore, the time necessary for p dollars to double depends on the interest rate and the frequency of compounding. Generally, the more frequently the interest is compounded, the shorter the time necessary for p dollars to double.

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