The fuel economy of a car, measured in miles per gallon, is modeled by the function ƒ (s) = - 0.009s2 + 0.699s + 12 where s represents the speed of the car, measured in miles per hour. What's the fuel economy of the car when it travels at an average of 20 miles an hour?
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Home » Mathematics » The fuel economy of a car, measured in miles per gallon, is modeled by the function ƒ (s) = - 0.009s2 + 0.699s + 12 where s represents the speed of the car, measured in miles per hour.