PSAT Math Practice

The function f is defined by the equation f( x ) = 7x + 2. What is the value of f(x) when x = 4 ?

Mathematical Equivalence

ON

Tags

CCSS.HSF.IF.A.2

The function g is defined by g(x) = x²+ 9. For which value of x is g(x) = 25 ?

• 4

• 5

• 9

• 13

Tags

CCSS.HSF.IF.A.2

The solution to the given system of equations is (x, y). What is the value of x ?

• 1

• 5

• 15

• 45

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is one of the solutions to the given equation?

answer should fill in the blank: z = _____

Tags

CCSS.HSA-REI.B.4B

• A

• B

• C

• D

A neighborhood consists of a 2-hectare park and a 35-hectare residential area. The total number of trees in the neighborhood is 3,934. The equation 2x y + 35 = 3,934 represents this situation. Which of the following is the best interpretation of x in this context?

• The average number of trees per hectare in the park

• The average number of trees per hectare in the residential area

• The total number of trees in the park

• The total number of trees in the residential area

Tags

CCSS.8.EE.C.7B

The graph shows the relationship between the number of shares of stock from Company A, x, and the number of shares of stock from Company B, y, that Simone can purchase. Which equation could represent this relationship?

• y = 8x + 12

• 8x + 12y = 480

• y = 12x + 8

• 12x + 8y = 480

Tags

CCSS.8.EE.B.5

• 0

• 55

• 110

• 3025

The population of Greenville increased by 7% from 2015 to 2016. If the 2016 population is k times the 2015 population, what is the value of k ?

• 0.07

• 0.7

• 1.07

• 1.7

Tags

CCSS.HSA.CED.A.1

The function h is defined by h(x) = 4x + 28. The graph of y = h(x) in the xy-plane has an x-intercept at ( a, 0) and a y-intercept at (0, b), where a and b are constants. What is the value of a + b ?

• 21

• 28

• 32

• 35