a. Gasoline Mileage Suppose you drive an average of 10,000 miles each year. Your gasoline mileage (mi/gal) varies inversely with the number of gallons of gasoline you use each year.

Write and graph a model for your average mileage m in terms of the gallons g of gasoline used.

b. After you begin driving on the highway more often, you use 50 gal less per year. Write and graph a new model to include this information.

c. Calculate your old and new mileage assuming that you originally used 400 gal of gasoline per year.

Write and graph an equation to model your average mileage m in terms of the gallons g of gasoline used.