A gas station sells 1600 gallons of gasoline per hour if it charges $ 2.25 per gallon but only 1200 gallons per hour if it charges $ 2.55 per gallon. Assuming a linear model

(a) How many gallons would be sold per hour of the price is $ 2.50 per gallon?
Answer:

(b) What must the gasoline price be in order to sell 1500 gallons per hour?
Answer: $

(c) Compute the revenue taken at the four prices mentioned in this problem -- $ 2.25, $ 2.50, $ 2.55 and your answer to part (b). Which price gives the most revenue?
Answer: $