8R Final Exam Review

Which value of x satisfies the equation 4x + 2x – 8 = 28?

• x = 4

• x = 6

• x = 8

• x = 12

Which of the numbers below has the smallest value?

• 2²

• 0³

• 3⁰

• 3⁻²

Which choice correctly shows the values needed to graph the line y = -3x + 5?

• m = -3, b = 5

• m = 5, b = -3

• m = 3, b = -5

• m = -5, b = 3

• -3

• −1\2​

• 3

• 1\2

Which statement best describes the function represented by the equation y = 2x² + 5x – 1?

• The function is linear.

• The function is nonlinear because the variable x is raised to the second power.

• The function is nonlinear because there are two variables.

• The function is linear because the variable y is raised to the second power.

• 7²⁰

• 1

• 7^4

• 0

Which is a factor of x² – 10x + 21?

• (x + 3)

• (x – 3)

• (x – 7)

• (x – 2)

A T-shirt company designs custom shirts. They charge a one-time design fee on top of the cost per shirt. A graph displaying the relationship between the total cost, y, and the number of shirts sold, x, is shown below. What is the cost per shirt?

• 24

• 12

• 1

• 8

• 6

• 12

• 16

Maria has 15 stamps in her collection. She plans to buy 5 more stamps every time she visits a new country. The total number of stamps (y) can be represented by the equation y = 5x + 15. What does the y-intercept represent?

• the number of stamps she buys on each trip

• the number of countries she visits

• the number of stamps she started with

• the total number of stamps after one trip