Suppose that you drive 30 comma 30,000 miles per year and gas averages $4 per gallon.

a. what will you save in annual fuel expenses by owning a hybrid car averaging 30 miles per gallon rather than an suv averaging 9 miles per gallon?

U drive 30,000 miles per yr ... and gas is $ 4 per gallon

hybrid car averaging 30 miles per gallon

30,000 / 30 = 1000 gallons ... at $ 4 per gallon ... 1000 * 4 = $ 4000 per yr

suv averaging 9 miles per gallon

30,000 / 9 = 3333.33 gallons ... at $ 4 per gallon ... 3333.33 * 4 = 13333.32 per yr

so u would save approx. : 13,333.32 - 4,000 = 9333.32 per yr <==