SOLUTION: A truck can be rented from Basic Rental for $50 per day plus $0.20 per mile. Roadrunners charges $20 per day plus $0.50 per mile to rent the same truck. How many miles must be driv
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Question 701084: A truck can be rented from Basic Rental for $50 per day plus $0.20 per mile. Roadrunners charges $20 per day plus $0.50 per mile to rent the same truck. How many miles must be driven in a day to make the rental cost for Basic Rental a better deal than that for Roadrunners?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
50+.20x<20+.50x
.20x-.50x<20-50
-.30x<-30
x>-30/-.30 not the change in the < sign. It changes to a > sign
when dividing by a negative value.
x>100 miles makes Basic Rental a better deal.
Proof:
Let the mileage be 101 miles.
50+.20*101<20+.50*101
50+20.20<20+50.50
70.20<70.50
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