Write an algebraic expression for the following word phrase: the quotient of r and 12.

Question

(1 point)

A. r • 12

B. r + 12

C. r ÷ 12

D. r – 12

Answer 1

C. r ÷ 12

Answer 2

Write a word phrase for the algebraic expression 3x - 7.
(1 point)

A. the difference of three times a number x and seven

D. the difference of seven and three times a number x

C. three times a number x fewer than seven

D. the quotient of three times a number x and seven

Answer 3

A. the difference of three times a number x and seven

Answer 4

Simplify the expression: 42 + 8 ÷ 2.
(1 point)

A. 12

B. 20

C. 8

D. 16

Answer 5

A. 12

Answer 6

Find the square root of 25.
(1 point)
Responses

A. 125

B. 5

C. 10

D. 0.05

Answer 7

B. 5

Answer 8

Find the square root of 0.81.
(1 point)

A. 0.9

B. 9

C. 81

D. 0.09

Answer 9

A. 0.9

Answer 10

Name the subset(s) of real numbers to which the number zero belongs. Choose all that apply.

(1 point)
Responses

irrational numbers

integers

whole numbers

natural numbers

Answer 11

integers
whole numbers
natural numbers

Answer 12

The cost of a telephone call is $0.75 + $0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes.

Answer 13

The algebraic expression that models the cost of a telephone call that lasts t minutes is:

0.75 + 0.25t