The rate of change of the average annual fuel consumption of passenger vehicles, buses, and trucks from 1970 through 2000 can be modeled as rt) = 0.8t-15.9 gallons per vehicle per year where t is the number of years since 1970. The average annual fuel consumption was 712 gallons per vehicle in 1980.t (a) Write the specific antiderivative giving the average annual fuel consumption. ) = | 0.4 -15.9t + 831 gallons per vehicle (b) How is this specific antiderivative related to an accumulation function of f? The specific antiderivative in part (a) is the formula for the accumulation of fshifted up so that it is passing through the point (t, F(t)) =