Problema Solution
One car rental agency charges $20 per day plus $0.25 per mile. A different agency charges $37 per day with unlimited mileage. For what mileages is the second rental a better deal? Set up as an inequality.
Answer provided by our tutors
let 'x' be the miles traveled in a day
First car rental agency charges $20 per day plus $0.25 per mile will charge a total of
20 + 0.25x
Second car agency charges $37 per day with unlimited mileage or a total charge of
37 + 0*x = 37
For what mileages is the second rental a better deal? That is we need to find for what x
37 < 20 + 0.25x
by solving we find
x > 68 miles
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the second rental is better for more than 68 miles.