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George is taking a road trip. His car holds 12 gallons of gas and has a...

George is taking a road trip. His car holds 12 gallons of gas and has a fuel economy of 24 miles per gallon. The speed limit is 55 mph on the highway he will travel on, and he plans to drive at 60 mph. Suppose he leaves at 8am with a full tank of gas.

a) determine an equation which represents the number of gallons left in George's car as a function of time in hours.

b) determine and equation which represents the amount of miles George has driven as a function of time in hours since 8AM.

c) how many miles will George be able to travel without refilling his tank? At what time will George need to refill his tank by?

Math   Precalculus   
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