7. Sugar and Calories in Cereal The author collected data from 16 cereals consisting of the sugar contents (in grams per gram of cereal) and the calories (per gram of cereal).

STATDISK was used to find that the linear correlation coefficient is r
0.765 and the equation of the regression line is where x represents the sugar content. Also, the mean calorie amount is 3.76 calories per gram of cereal.

What is the best predicted calorie content for a cereal with 0.40 gram of sugar per gram of cereal?