Imagine that the price per gallon of gas with a $5 car wash is $3.14 and the pri

Question

Imagine that the price per gallon of gas with a $5 car wash is $3.14 and the price without a car wash is $3.39. When is it worth it to buy the car wash? When is it worth it if the car wash costs $3? When is it worth it if the car wash costs $5? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The car wash worth it at or more gallons of gasoline. (simplify your answer.) B. The car wash worth it at or less gallons of gasoline. (simplify your answer.) C. The car wash is always worth it. D. The car wash is never worth it. When is it worth it if the car wash costs $3? A. The car wash worth it at or more gallons of gasoline. (simplify your answer.) B. The car wash worth it at or less gallons of gasoline. (simplify your answer.) C. The car wash is always worth it. D. The car wash is never worth it.

Explanation / Answer

Let x gallon s of gas be purchased along at the car wash. Then:

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