a) Calculate the highway fuel efficiency for a vehicle this has 3.0 engine displacement, 6 cyclinders, 6 gears and is carline class 3 using your preferred simple regression model from part 5. (Use only one of the above noted inputs in your preferred model). b) Include the point estimate and the prediction interval for that estimate

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.