Fat, Calories, and Carbohydrates A nutritionist established a significant relationship among the fat content, the amount of carbohydrates, and the number of calories in a variety of popular 1-ounce snacks.
She obtained the regression equation y = 10.954 + 8.4987x1 + 4.2982x2, where y is the number of calories per snack, x1 is the number of grams of fat, and x2 represents the number of carbohydrates in grams. Predict the number of calories in a snack which contains 10 g of fat and 19 g of carbohydrates.