SAT Practice Questions

If 4x + 2 = 12, what is the vaue of 16x + 8 ?

• 46

• 56

• 48

• 24

A company that provides whale-watching tours takes groups of 21 people at a time. The company's revenue is 80 dollars per adult and 60 dollars per child. If the company's revenue was 1,440 dollars, how many people in the group were children?

• 9

• 3

• 18

• 12

One of the factors of the given equation is x + b, where b is a positive constant. What is the smallest positive value of b ?

• 0

• 2

• 8

• 13

One gallon og paint will cover 220 square feet of a surface. A room has a total wall area of w square feet. Which equation represents the total amount of paint P, in gallons, needed to paint the walls of the room twice ?

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

• -13

• 13

• -17

• 17

Out of 300 seeds that were planted, 80% sprouted. How many of these seeds sprouted?

• 200

• 60

• 260

• 240

Line p is defined by 2y + 18x = 9. Line r is perpendicular to line p in the xy-plane. What is the slope of the line r ?

• • - 9

• 9

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A right triangle has legs with lengths of 24 centimeters and 21 centimeters. If the length of this triangle's hypotenuse, in centimeters, can be written in the form 3√d, where d is an integer, what is the value of d ?

• 576

• 1017

• 113

• 441

Which expression is equivalent to the given equation, where x > 7 ?

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The function f is defined by f(x) = 4x. For what value of x does f(x) = 8 ?

• 8

• 4

• -2

• 2