Write an algebraic expression for the following word phrase: the quotient of r and 12.
(1 point)
Responses
r • 12
r • 12
r + 12
r + 12
r ÷ 12
r ÷ 12
r – 12
r ÷ 12
Write a word phrase for the algebraic expression 3x - 7.
(1 point)
Responses
the difference of three times a number x and seven
the difference of three times a number x and seven
the difference of seven and three times a number x
the difference of seven and three times a number x
three times a number x fewer than seven
three times a number x fewer than seven
the quotient of three times a number x and seven
the quotient of three times a number x and seven
the difference of three times a number x and seven
Simplify the expression: 42 + 8 ÷ 2.
(1 point)
Responses
12
12
20
20
8
8
16
16
Name the subset(s) of real numbers to which the number zero belongs. Choose all that apply.
(1 point)
Responses
irrational numbers
irrational numbers
integers
integers
whole numbers
whole numbers
natural numbers
integers
whole numbers
natural numbers
Note: Your teacher will grade your response to ensure that you receive proper credit for your answer.
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.
(1 point)
The algebraic expression that models the cost of a telephone call that lasts t minutes is:
0.75 + 0.25t
The correct algebraic expression for the word phrase "the quotient of r and 12" is r ÷ 12.
To understand why this is the correct expression, let's break down the phrase. "The quotient" refers to the result of dividing two quantities. "r" represents the first quantity, and "12" represents the second quantity. When we divide r by 12, we use the division operation, which is denoted by the ÷ symbol in algebraic expressions.
So, to get the answer, you would simply divide r by 12 using the division symbol ÷. Therefore, the correct algebraic expression is r ÷ 12.