In this situation, what does the solution to the equation tell us? One gram of protein contains 4 calories. One gram of fat contains 9 calories. A snack has 60 calories from p grams of protein and f grams of fat. The equation 4p + 9f = 60 represents the relationship between these quantities. Determine if each pair of values could be the number of grams of protein and fat in the snack. Show your reasoning.