Physics, 06.10.2019 04:00 viktoria1198zz

The gas mileage m (in mi/gal) of a car is given as a function of speed v (in mph); m (s) = - 1/28 v^2 + 4y - 80 at what driving speed will this vehicle perform with the best gas mileage? what is the vehicle's gas mileage at that speed?

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The gas mileage m (in mi/gal) of a car is given as a function of speed v (in mph); m (s) = - 1/28 v...