The calorie count of a serving of food can be computed based on its composition of carbohydrate, fat, and protein. the calorie count c for a serving of food can be computed using the formula upper c equals 4 h plus 9 f plus 4 p, where h is the number of grams of carbohydrate contained in the serving, f is the number of grams of fat contained in the serving, and p is the number of grams of protein contained in the serving. a serving of raisins contains 148 calories and 29 grams of carbohydrate. if raisins are a fat-free food, how much protein is provided by this serving of raisins?