can you help me solve this problem please?

21. Weight of a Car versus Miles per Gallon (Refer to Problem 29, Section 4.1.) An engineer wants to determine how the weight of a car, x, affects gas mileage, y. The following data represent the weights of various domestic cars and their miles per gallon in the city for the 2015 model year. Car Weight (1b) Miles per Gallon Buick Lacrosse 4724 Cadillac XTS 4006 Chevrolet Cruze 3097 Chevrolet Impala 3555 Chrysler 300 4029 Dodge Charger 3031 Dodge Dart Ford Focus 2960 Ford Mustang 3530 Lincoln MKZ 3823 Source. Each manufacturer's website (a) Find the least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable. (b) Interpret the slope and yrintercept, if appropriate. (c) A Cadillac CTS weighs 3649 pounds and gets 20 miles per gallon. Is the miles per gallon of a CTS above average or below average for cars of this weight? (d) Would it be reasonable to use the least-squares regression line to predict the miles per gallon of a Toyota Prius, a hybrid gas and electric car? Why or why not