Unit Test Answers

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3

Select the equation that can be used to find the input value at which f (x ) = g (x ), and then use that equation to find the input, or x -value.

A
1.8x – 10 = –4; x =
Option A
B
1.8x = –4; x =
Option B
C
1.8x – 10 = –4; x =
Option C
D
–4 = x
4

A rental car company charges $0.50 per mile and a flat rate of $30.00 for any type of sedan. If m represents the number of miles driven and C(m) represents the total cost for renting a sedan, what is the linear equation that represents a cost of $130?

A
30 = 0.50m + 130
B
30 = 130m + 0.50
C
130 = 0.50m + 30
D
130 = 30m + 0.50
5

If C(m) = 0.50m + 30 represents the cost of renting a car, how many miles were driven if the cost is $130?

A
50 miles
B
80 miles
C
200 miles
D
320 miles

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Unit Test Answers — EA Academy Algebra I