a serving of a certain type of nut contains 12 grams of fat, 7 grams of carbohydrate, and 6 grams of protein. How many calories are in this serving of nuts? The calorie counts see for a serving of food can be computed using the formula C equals 4 H + 9 + 4 P where H is the number of grams of carbohydrate contained in the serving, fis the number of grams of fat contained in the serving, and p is the number of grams of protein contained in the serving.