46. More Starbucks In Exercises 6 and 12, you described the relationship between fat (in grams) and the number of calories in products sold at Starbucks. The scatterplot shows this relationship, along with
two regression lines. The regression line for the
food products (blue squares) is ý = 170+ 11.8x. The regression line for the drink products (black dots) is y = 88 + 24.5x.

(a) How do the regression lines compare?
(b) How many more calories do you expect to find in a
food item with 5 grams of fat compared to a drink item
with 5 grams of fat?