Gas mileage (miles per gallon, mpg) can be approximated by a quadratic function of speed. For a particular automobile, assume the vertex occurs when the speed is 50 miles per hour (the mpg will be 30).

a. Write a quadratic function that models this relationship, assuming 70 miles per hour corresponds to 25 mpg.

b. What gas mileage would you expect for this car driving 90 miles per hour?

Gas mileage (miles per gallon, mpg) can be approximated by a quadratic function of speed. For a particular automobile, assume the vertex occurs when the speed is 50 miles per hour (the mpg will be 30). a. Write a quadratic function that models this relationship, assuming 70 miles per hour corresponds to 25 mpg. b. What gas mileage would you expect for this car driving 90 miles per hour?