AnswersAZ-Intermediate Algebra A MA311Solving Linear Equations: Variable on One Side

Solving Linear Equations: Variable on One Side Answers

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A coordinate grid with 2 lines. One line, labeled f(x) passing through (negative 3, 3), (0, 3), and the point (4, 3). The other line is labeled g(x) and passes through (negative 4, negative 3), (0, 0), and the point (4, 3).

Question illustration
A
x = −1
B
x = 0
C
x = 3
D
x = 4
2
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A coordinate grid with 2 lines. One line, labeled f(x) passing through (negative 2, 4), (0, 2), and the point (1, 1). The other line is labeled g(x) and passes through (negative 3, negative 3), (0, 0) and the point (1, 1).

Question illustration
A
x = −1
B
x = 0
C
x = 1
D
x = 2
3

Solve the equation.−10x + 1 + 7x = 37

A
x = −15
B
x = −12
C
x = 12
D
x = 15
4

Rahul solved the equation 2(x – ) – x = . In which step did he use the addition property of equality?

Question illustration
A
Step 1
B
Step 2
C
Step 3
D
Step 4
5

Mustafa’s soccer team is planning a school dance as a fundraiser. The DJ charges $200 and decorations cost $100. The team decides to charge each student $5.00 to attend the dance. If n represents the number of students attending the dance, which equation can be used to find the number of students needed to make $1,500 in profit?

A
5n – 300 = 1,500
B
5n + 300 = 1,500
C
5n – 200 + 100n = 1,500
D
5n – 100 – 200n = 1,500
6

A number, n, is added to 15 less than 3 times itself. The result is 101. Which equation can be used to find the value of n?

A
3n – 15 + n = 101
B
3n + 15 + n = 101
C
3n – 15 – n = 101
D
3n + 15 – n = 101
7

Sean began jogging to live a healthier lifestyle. On his first run, he ran one-half mile. He increased his workouts by adding two miles a month to his run. He wrote the equation f(x)= 0.5 + 2x to model his progress. The variable x represents the number of

A
miles he runs.
B
months he runs.
C
miles he ran the first day.
D
calories he burns.
8

The equation 9(u – 2) + 1.5u = 8.25 models the total miles Michael traveled one afternoon while sledding, where u equals the number of hours walking up a hill and (u – 2) equals the number of hours sledding down the hill. Which is the value of u?

A
u = 0.25
B
u = 0.75
C
u = 1.1
D
u = 2.5
9

Solve the equation.5x + 8 − 3x = −10

A
x = −9
B
x = −1
C
x = 1
D
x = 9
10

Consider the equation 3p – 7 + p = 13. What is the resulting equation after the first step in the solution?

A
p – 7 = 13 – 3p
B
2p – 7 = 13
C
3p – 7 = 13 – p
D
4p – 7 = 13

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