Posted by Alison on Wednesday, April 9, 2014 at 9:50pm.
Since the car rents for $22.50 per day and you are charged $.15 per mile, how many miles could you drive and not spend over $50.00

math  Ms. Sue, Wednesday, April 9, 2014 at 9:59pm
(50  22.5) / 0.15 = ______

math  Reiny, Wednesday, April 9, 2014 at 9:59pm
number of miles  m
.15m + 22.5 ≤ 50
.15m ≤ 27.5
m ≤ 183.333..
Suppose you drive 183 miles
cost = 183(.15) + 22.50 = 49.95 , still good
suppose you drive 184 miles
cost = 184(.15) + 22.5 =50.10, oops, we are over
so you can drive 183 miles and still be under $50
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