SOLUTION: A car rental cost $90 a day for the first 270 miles, plus $0.20 for each additional mile. if Sonya rental cost was $128 for a one day rental, how many miles did she drive?

Question 1071131: A car rental cost $90 a day for the first 270 miles, plus $0.20 for each additional mile. if Sonya rental cost was $128 for a one day rental, how many miles did she drive?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
, for

Sonya had cost of rental, $128 which is MORE than 90 dollars, and for miles MORE than 270.

beyond $90.

.
---not yet the full answer...

Already did 270 allowed miles, and then did the 190 more miles.
, total miles.
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

A car rental cost $90 a day for the first 270 miles, plus $0.20 for each additional mile. if Sonya rental cost was $128 for a one day rental, how many miles did she drive?

Cost equation: , where:
C(m) = Cost of daily rental, based on "m" miles
m = Amount of MILES driven for the day
Substituting 128 for C(m), we find that the total amount of miles driven on that day was:
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