Foundations of Algebra Semester Exam

What is the value of x in the following equation?

4x - 9 = 19

• 6

• 7

• 8

• 28

Which of the following is an example of an Integer?

• -⅝

• 0.75

• √10

• -21

Which of the following is an example of an Irrational?

• -⅝

• 0.75

• √10

• -21

A rare baseball card's value after x years can be modeled with the equation f(x) = 500(1.025)^x. What is the initial value of the card?

• x

• f(x)

• 500

• 1.025

Which inequality is represented in the graph?

• y < 2x - 1

• y > 2x - 1

• y ≤ 2x - 1

• y < -½x - 1

What is the slope in the equation

y = ⅔x + 4?

• ⅔

• 4

• -4

• -⅓

Randy is saving up for AirPods which cost around $160. He has saved $70. How much more does he need in order to buy the AirPods?

• $70

• $80

• $90

• $230

Which equation has the same y-intercept as the graph shown?

• y = -4x - 2

• y = -x + 4

• y = 4x - 4

• y = x - 4

What are the zeros of the function f(x) = 2x² + 16x + 30?

• 5 and 3

• -5 and -3

• -5 and 3

• 5 and -3

What is another way to write 3n^{5 .} -4n²?

• -n¹⁰

• -7n⁷

• -12n¹⁰

• -12n⁷