AnswersFL-1200700-Mathematics for College Algebra MISSolving Linear Equations: Variable on One Side

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Maki uses 20 gallons of a solution with an unknown ethanol concentration and 60 gallons of a 12% ethanol solution to make 80 gallons of a 10% solution. The table shows the amount of each solution.What is the value of x, the concentration of the unknown ethanol solution?

Question illustration
A
0.02
B
0.04
C
0.05
D
0.08
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The circumference of a circle can be found using the formula C = 2r.

Question illustration
A
r = C
Option A
B
r = C(2)
Option B
C
r =
Option C
D
r =
Option D
23

The equation d = can be used to calculate the density, d, of an object with mass, m, and volume, V. Which is an equivalent equation solved for V?

Question illustration
A
dm = V
B
= V
Option B
C
= V
Option C
D
m – d = V
24

Giuliana has 22 quarters and dollar coins worth a total of $10.75.

A
d – 22 + 0.25d = 10.75
B
0.25d + 22 – d = 10.75
C
0.25(22 – d) + d = 10.75
D
d + 0.25(d – 22) = 10.75
25

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question. There are 15 questions on the test and the students have been given 55 minutes to complete it.Which value could replace x in the table?

Question illustration
A
7 – m
B
23 – m
C
8(15 – m)
D
8(15) – m

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