Final Exam F21 form B

Akwankyerɛ

- use POPULATION standard deviation

You are not required to show your work on Formative, but if you do, you may get partial credit. Simply type what steps you took to get your answer ("I divided both sides by 6, then subtracted 3) rather than trying to draw in Formative.

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Good luck!

1

Tony and Bruce went to the concession stand. Tony bought one hotdog and one drink and paid $6.00. Bruce bought four hotdogs and two drinks and paid $20. What is the total cost of three hotdogs and one drinks?

1

Kae is on a strict 2000 calorie diet - she cannot eat more than 2000 calories in a day. For safety, she has to eat at least 1000 calories. A serving of grains is 400 calories, and a serving of fruit is 200 calories. She wants to eat more servings of grains than fruits. Which combinations fit Kae's goals?

1

Consider the function f(x) = -\frac{3}{4}(x + 5)^{2} -2 .
What transformations have been applied to the quadratic parent function to create f(x)? Check all that apply.

1

The quadratic parent function is compressed by 1/2, then shifted up 3 units. What is the resulting function?
Use "y=..." format, no spaces.

1

Calculate (7+3i)(1 - 5i) + 2i(3-i).
Enter your answer as a complex number in the form a+bi, with a and b real numbers. No spaces.

1

What is the sum of the solutions to the following equation?
(Find both solutions, then add them together.)
3x^{2} + 8x + 4 = 0.
Enter your answer as a fraction, no spaces.

1

For the quadratic equation x^{2} + x + 4 = 0, determine the number and type of solutions.

2 real, rational solutions

2 real, irrational solutions

2 nonreal solutions

1 real solution and 1 nonreal solution

1

For the quadratic equation x^{2} +x - 5 = 0, determine the number and type of solutions.

2 real, rational solutions

2 real, irrational solutions

2 nonreal solutions

1 real solution and 1 nonreal solution

1

Which of the following are roots of the polynomial x^{3}-3x^{2}+4x-12? Check all that apply.

1

What is the remainder when the polynomial x^{3} - 5x^{2} + 2x - 6 is divided by (x - 1)?
Enter your answer as an integer, no spaces.

1

For the polynomial p(x), as x \rightarrow \infty, f(x) \rightarrow \infty and as x\rightarrow -\infty, f(x) \rightarrow -\infty.
Which of the following is true?

p(x) is an even-degree polynomial with a positive leading coefficient.

p(x) is an even-degree polynomial with a negative leading coefficient.

p(x) is an odd-degree polynomial with a positive leading coefficient.

p(x) is an odd-degree polynomial with a negative leading coefficient.

none of the above (impossible to determine)

1

Match each expression to its equivalent using the properties of exponents.

Draggable item		Corresponding Item
b^{x} \cdot b^{y}		a^{x}b^{x}
b^{-x}		b^{x+y}
b^{\frac{x}{y}}		\frac{1}{b^{x}}
(ab)^{x}		\sqrt[y]{b^{x}}

1

Simplify the expression below.
\sqrt[3]{2x} \cdot \sqrt[3]{16x^{4}}

2x\sqrt[3]{2x}

4x\sqrt[3]{2x}

4x\sqrt[3]{4x^{2}}

2x\sqrt[3]{4x^{2}}

1

Consider the equation
5 - \sqrt{6x+3} = 2
For what value of x is this equation true? Enter your answer as a number, no spaces.

1

Which of the following is the inverse of the function f(x) = \sqrt{x+3} - 5?

1

Let A be a positive, real number. Which of the following is true as x \rightarrow \infty?

1

Find the value of x that satisfies the equation.
2^{x} = 41
Give your answer as a number rounded to two decimal places.

1

Find the value of x that satisfies the equation.
2 \cdot 3^{x} + 4 = 16
Give your answer as a number rounded to two decimal places.

1

Find the value of x that satisfies the equation.
250 - e^{x+1 } = 0
Give your answer as a number rounded to two decimal places.

1

Sandra deposits $4000 to start a savings account. Her bank gives her 6% annual interest.

1

Select the expression that describes the value of the account after t years.

4000(1.6)^t

1.6(4000)^t

1.06(4000)^t

4000(1.06)^t

1

How much more interest would Sandra earn if her account had five years of interest compounded monthly, instead of five years with annual interest?
Enter your answer as a number rounded to two decimal places.

The table below shows the average movie ticket price every five years since 1968.

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The r-values for the regressions are as follows.

LinReg: 0.9861

QuadR: 0.9932

ExpReg: 0.9809

LnReg: 0.9106

1

According to the r-values, which model best fits the data?

Linear

Quadratic

Exponential

Logarithmic

1

Estimate the value of a movie ticket in 2023 (x=12).
Enter your answer as a number rounded to two decimal places. I recommend using three decimal places for the coefficients your calculator gives you.

Use the data from the table below for the following questions.

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1

What is the mean of the data? Enter your answer as a number rounded to one decimal place.

1

What is the standard deviation of the data?
Enter your answer as a number rounded to two decimal places.

1

A data set has a mean of 4 and a standard deviation of 1. What is the z-score for a data value of 2.5?
Enter your answer as a number rounded to one decimal place.

1

A data value has a z-score of -1.01. What percent of the population is less than this data value?

A group of 200 people were surveyed about their pet ownership and exercise habits. The results are shown in the table below.

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1

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly?
Enter your answer as a number, no "%" or spaces.

1

If a person is randomly selected from the group, what is the probability, as a percent, that they don't own pets and don't exercise weekly?
Enter your answer as a number rounded to one decimal place, no "%" or spaces.

1

If a person is randomly selected from the group, what is the probability, as a percent, that they own a pet or they exercise weekly?
Enter your answer as a percent rounded to two decimal places, no "%" or spaces.

1

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly, given that they own a pet?
Enter your answer as a number rounded to two decimal places, no "%" or spaces.

1

Final Exam F21 form B

Tony and Bruce went to the concession stand. Tony bought one hotdog and one drink and paid $6.00. Bruce bought four hotdogs and two drinks and paid $20. What is the total cost of three hotdogs and one drinks?

Consider the function f(x) = -\frac{3}{4}(x + 5)^{2} -2 .What transformations have been applied to the quadratic parent function to create f(x)? Check all that apply.

The quadratic parent function is compressed by 1/2, then shifted up 3 units. What is the resulting function? Use "y=..." format, no spaces.

Calculate (7+3i)(1 - 5i) + 2i(3-i).Enter your answer as a complex number in the form a+bi, with a and b real numbers. No spaces.

What is the sum of the solutions to the following equation?(Find both solutions, then add them together.)3x^{2} + 8x + 4 = 0.Enter your answer as a fraction, no spaces.

For the quadratic equation x^{2} + x + 4 = 0, determine the number and type of solutions.

For the quadratic equation x^{2} +x - 5 = 0, determine the number and type of solutions.

Which of the following are roots of the polynomial x^{3}-3x^{2}+4x-12? Check all that apply.

What is the remainder when the polynomial x^{3} - 5x^{2} + 2x - 6 is divided by (x - 1)?Enter your answer as an integer, no spaces.

For the polynomial p(x), as x \rightarrow \infty, f(x) \rightarrow \infty and as x\rightarrow -\infty, f(x) \rightarrow -\infty.Which of the following is true?

Match each expression to its equivalent using the properties of exponents.

Simplify the expression below.\sqrt[3]{2x} \cdot \sqrt[3]{16x^{4}}

Consider the equation5 - \sqrt{6x+3} = 2For what value of x is this equation true? Enter your answer as a number, no spaces.

Which of the following is the inverse of the function f(x) = \sqrt{x+3} - 5?

Let A be a positive, real number. Which of the following is true as x \rightarrow \infty?

Find the value of x that satisfies the equation.2^{x} = 41Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.2 \cdot 3^{x} + 4 = 16Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.250 - e^{x+1 } = 0 Give your answer as a number rounded to two decimal places.

Select the expression that describes the value of the account after t years.

How much more interest would Sandra earn if her account had five years of interest compounded monthly, instead of five years with annual interest?Enter your answer as a number rounded to two decimal places.

According to the r-values, which model best fits the data?

Estimate the value of a movie ticket in 2023 (x=12). Enter your answer as a number rounded to two decimal places. I recommend using three decimal places for the coefficients your calculator gives you.

What is the mean of the data? Enter your answer as a number rounded to one decimal place.

What is the standard deviation of the data? Enter your answer as a number rounded to two decimal places.

A data set has a mean of 4 and a standard deviation of 1. What is the z-score for a data value of 2.5?Enter your answer as a number rounded to one decimal place.

A data value has a z-score of -1.01. What percent of the population is less than this data value?

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly?Enter your answer as a number, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they don't own pets and don't exercise weekly?Enter your answer as a number rounded to one decimal place, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they own a pet or they exercise weekly?Enter your answer as a percent rounded to two decimal places, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly, given that they own a pet?Enter your answer as a number rounded to two decimal places, no "%" or spaces.

Tony and Bruce went to the concession stand. Tony bought one hotdog and one drink and paid $6.00. Bruce bought four hotdogs and two drinks and paid $20. What is the total cost of three hotdogs and one drinks?

Consider the function f(x) = -\frac{3}{4}(x + 5)^{2} -2 .What transformations have been applied to the quadratic parent function to create f(x)? Check all that apply.

The quadratic parent function is compressed by 1/2, then shifted up 3 units. What is the resulting function? Use "y=..." format, no spaces.

Calculate (7+3i)(1 - 5i) + 2i(3-i).Enter your answer as a complex number in the form a+bi, with a and b real numbers. No spaces.

What is the sum of the solutions to the following equation?(Find both solutions, then add them together.)3x^{2} + 8x + 4 = 0.Enter your answer as a fraction, no spaces.

For the quadratic equation x^{2} + x + 4 = 0, determine the number and type of solutions.

For the quadratic equation x^{2} +x - 5 = 0, determine the number and type of solutions.

Which of the following are roots of the polynomial x^{3}-3x^{2}+4x-12? Check all that apply.

What is the remainder when the polynomial x^{3} - 5x^{2} + 2x - 6 is divided by (x - 1)?Enter your answer as an integer, no spaces.

For the polynomial p(x), as x \rightarrow \infty, f(x) \rightarrow \infty and as x\rightarrow -\infty, f(x) \rightarrow -\infty.Which of the following is true?

Match each expression to its equivalent using the properties of exponents.

Simplify the expression below.\sqrt[3]{2x} \cdot \sqrt[3]{16x^{4}}

Consider the equation5 - \sqrt{6x+3} = 2For what value of x is this equation true? Enter your answer as a number, no spaces.

Which of the following is the inverse of the function f(x) = \sqrt{x+3} - 5?

Let A be a positive, real number. Which of the following is true as x \rightarrow \infty?

Find the value of x that satisfies the equation.2^{x} = 41Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.2 \cdot 3^{x} + 4 = 16Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.250 - e^{x+1 } = 0 Give your answer as a number rounded to two decimal places.

Select the expression that describes the value of the account after t years.

Select the expression that describes the value of the account after t months.

How much more interest would Sandra earn if her account had five years of interest compounded monthly, instead of five years with annual interest?Enter your answer as a number rounded to two decimal places.

According to the r-values, which model best fits the data?

Estimate the value of a movie ticket in 2023 (x=12). Enter your answer as a number rounded to two decimal places. I recommend using three decimal places for the coefficients your calculator gives you.

What is the mean of the data? Enter your answer as a number rounded to one decimal place.

What is the standard deviation of the data? Enter your answer as a number rounded to two decimal places.

A data set has a mean of 4 and a standard deviation of 1. What is the z-score for a data value of 2.5?Enter your answer as a number rounded to one decimal place.

A data value has a z-score of -1.01. What percent of the population is less than this data value?

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly?Enter your answer as a number, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they don't own pets and don't exercise weekly?Enter your answer as a number rounded to one decimal place, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they own a pet or they exercise weekly?Enter your answer as a percent rounded to two decimal places, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly, given that they own a pet?Enter your answer as a number rounded to two decimal places, no "%" or spaces.

Are pet-ownership and exercise habits independent or dependent events?Hint: use #33 and #36

Select the expression that describes the value of the account after t months.

Are pet-ownership and exercise habits independent or dependent events?Hint: use #33 and #36

Consider the function f(x) = -\frac{3}{4}(x + 5)^{2} -2 .
What transformations have been applied to the quadratic parent function to create f(x)? Check all that apply.

The quadratic parent function is compressed by 1/2, then shifted up 3 units. What is the resulting function?
Use "y=..." format, no spaces.

Calculate (7+3i)(1 - 5i) + 2i(3-i).
Enter your answer as a complex number in the form a+bi, with a and b real numbers. No spaces.

What is the sum of the solutions to the following equation?
(Find both solutions, then add them together.)
3x^{2} + 8x + 4 = 0.
Enter your answer as a fraction, no spaces.

What is the remainder when the polynomial x^{3} - 5x^{2} + 2x - 6 is divided by (x - 1)?
Enter your answer as an integer, no spaces.

For the polynomial p(x), as x \rightarrow \infty, f(x) \rightarrow \infty and as x\rightarrow -\infty, f(x) \rightarrow -\infty.
Which of the following is true?

Simplify the expression below.
\sqrt[3]{2x} \cdot \sqrt[3]{16x^{4}}

Consider the equation
5 - \sqrt{6x+3} = 2
For what value of x is this equation true? Enter your answer as a number, no spaces.

Find the value of x that satisfies the equation.
2^{x} = 41
Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.
2 \cdot 3^{x} + 4 = 16
Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.
250 - e^{x+1 } = 0
Give your answer as a number rounded to two decimal places.

How much more interest would Sandra earn if her account had five years of interest compounded monthly, instead of five years with annual interest?
Enter your answer as a number rounded to two decimal places.

Estimate the value of a movie ticket in 2023 (x=12).
Enter your answer as a number rounded to two decimal places. I recommend using three decimal places for the coefficients your calculator gives you.

What is the standard deviation of the data?
Enter your answer as a number rounded to two decimal places.

A data set has a mean of 4 and a standard deviation of 1. What is the z-score for a data value of 2.5?
Enter your answer as a number rounded to one decimal place.

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly?
Enter your answer as a number, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they don't own pets and don't exercise weekly?
Enter your answer as a number rounded to one decimal place, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they own a pet or they exercise weekly?
Enter your answer as a percent rounded to two decimal places, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly, given that they own a pet?
Enter your answer as a number rounded to two decimal places, no "%" or spaces.

Consider the function f(x) = -\frac{3}{4}(x + 5)^{2} -2 .
What transformations have been applied to the quadratic parent function to create f(x)? Check all that apply.

The quadratic parent function is compressed by 1/2, then shifted up 3 units. What is the resulting function?
Use "y=..." format, no spaces.

Calculate (7+3i)(1 - 5i) + 2i(3-i).
Enter your answer as a complex number in the form a+bi, with a and b real numbers. No spaces.

What is the sum of the solutions to the following equation?
(Find both solutions, then add them together.)
3x^{2} + 8x + 4 = 0.
Enter your answer as a fraction, no spaces.

What is the remainder when the polynomial x^{3} - 5x^{2} + 2x - 6 is divided by (x - 1)?
Enter your answer as an integer, no spaces.

For the polynomial p(x), as x \rightarrow \infty, f(x) \rightarrow \infty and as x\rightarrow -\infty, f(x) \rightarrow -\infty.
Which of the following is true?

Simplify the expression below.
\sqrt[3]{2x} \cdot \sqrt[3]{16x^{4}}

Consider the equation
5 - \sqrt{6x+3} = 2
For what value of x is this equation true? Enter your answer as a number, no spaces.

Find the value of x that satisfies the equation.
2^{x} = 41
Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.
2 \cdot 3^{x} + 4 = 16
Give your answer as a number rounded to two decimal places.

Find the value of x that satisfies the equation.
250 - e^{x+1 } = 0
Give your answer as a number rounded to two decimal places.

How much more interest would Sandra earn if her account had five years of interest compounded monthly, instead of five years with annual interest?
Enter your answer as a number rounded to two decimal places.

Estimate the value of a movie ticket in 2023 (x=12).
Enter your answer as a number rounded to two decimal places. I recommend using three decimal places for the coefficients your calculator gives you.

What is the standard deviation of the data?
Enter your answer as a number rounded to two decimal places.

A data set has a mean of 4 and a standard deviation of 1. What is the z-score for a data value of 2.5?
Enter your answer as a number rounded to one decimal place.

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly?
Enter your answer as a number, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they don't own pets and don't exercise weekly?
Enter your answer as a number rounded to one decimal place, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they own a pet or they exercise weekly?
Enter your answer as a percent rounded to two decimal places, no "%" or spaces.

If a person is randomly selected from the group, what is the probability, as a percent, that they exercise weekly, given that they own a pet?
Enter your answer as a number rounded to two decimal places, no "%" or spaces.

Are pet-ownership and exercise habits independent or dependent events?
Hint: use #33 and #36

Are pet-ownership and exercise habits independent or dependent events?
Hint: use #33 and #36