The following table shows the fuel efficiency (in miles per gallon) of a car in relation to the speed that it is traveling (in miles per hour). Speed Fuel Efficiency (15 20.4) (25 27.2) (35 28.3) (45 29.0) (55 30.1) (65 27.6) (75 23.1) Use a graphing or online regression calculator to find the quadratic function of best fit for this set of data. Which of the following statements is true about this function?​