Multiple Choice
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 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
16
Find the square root of 25.
(1 point)
Responses
125
125
5
5
10
10
0.05
5
Find the square root of 0.81.
(1 point)
Responses
0.9
0.9
9
9
81
81
0.09
0.9
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
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.
0.75 + 0.25t
Multiple Choice
–1.8 – 3.9 =
(1 point)
Responses
–2.1
–2.1
5.7
5.7
2.1
2.1
–5.7
-5.7
–7 + 5 =
(1 point)
Responses
–2
–2
12
12
–12
–12
2
-2
–6.1 + 1.7 =
(1 point)
Responses
7.8
7.8
–4.4
–4.4
–7.8
–7.8
4.4
-4.4
A mountain climber ascends a mountain to its peak. The peak is 12,740 ft above sea level. The climber then descends 200 ft to meet a fellow climber. Find the climber's elevation above sea level after meeting the other climber.
(1 point)
Responses
12,540 ft above sea level
12,540 ft above sea level
12,540 ft below sea level
12,540 ft below sea level
10,740 ft above sea level
10,740 ft above sea level
12,940 ft above sea level
12,540 ft above sea level
Multiple Choice
What is the product of (–6.8)2?
(1 point)
Responses
–13.6
–13.6
46.24
46.24
–46.24
–46.24
13.6
46.24
Simplify the expression negative Start Root 196 End Root.
(1 point)
Responses
98
98
–14
–14
14
14
392