ACT Math - 10 questions

The average of 6 numbers is 48. What is the 6th number if the first 5

numbers are 34, 43, 52, 58, and 56?

• 43

• 45

• 46

• 49

• 50

The equation y = (1/3)x + 4 defines a line. Which of these equations defines a line that is perpendicular to the first?

• y = (1/3)x - 2

• y = -(1/3)x + 5

• y = 3x - 5

• y = -3x + 2

What is the distance between the points (-1, -4) and (4, 8)?

• 7

• 12

• 13

• 17

What is the midpoint of these two points?

(-3, 4) and (5, 0)

• (-4, 2)

• (2, 0)

• (1, 2)

• (8, 4)

What are the zeros of this function?

(x - 1)(x + 5)(x - 1)(x + 8)

• x = -1, 5, and 8

• x = 1, -5, and -8

• x = 1

• There are no zeroes for this function

The function y = 2x is shifted vertically 7 units upward. Which equation represents the resulting function?

• y = 2x + 7

• y = 2x - 7

• y = 2(x - 7)

• y = 2(x + 7)

The numbers 1 through 15 were each written on individual pieces of paper, 1 number per piece. Then the 15 pieces of paper were put in a jar. One piece of paper will be drawn from the jar at random. What is the probability of drawing a piece of paper with a number less than 9 written on it?

• 1/9

• 1/15

• 6/15

• 7/15

• 8/15

Of the 180 students in a college course, 1/4 of the students earned an A for the course, 1/3 of the students earned a B for the course, and the rest of the students earned a C for the course. How many of the students earned a C for the course?

• 75

• 90

• 105

• 120

• 135

• A

• B

• C

• D

• E

• F

• G

• H

• J

• K