6 Data was collected on the speed and mileage of a car Speed is miles per hour and mileage is miles per gallon speed Y mileage 12 17 18 22 22 26 28 29 35 29 a Is the data Linear Quadratic or Cubic 40 31 b Write the equation of the regression curve 46 33 50 32 56 28 61 26 68 24 76 18 2 points AT 2 points c Use your equation to predict the mileage of a car with a speed of 42 miles per hour 2 points d What is the average rate of change from 55 miles per hour to 60 miles per hour 2 points