Bill is trying to plan a meal to meet specific nutritional goals. he wants to prepare a meal containing rice, tofu, and peanuts that will provide 277 grams of carbohydrates, 370 grams of fat, and 206 grams of protein. he knows that each cup of rice provides 48 grams of carbohydrates, 0 grams of fat, and 2 grams of protein. each cup of tofu provides 7 grams of carbohydrates, 15 grams of fat, and 19 grams of protein. finally, each cup of peanuts provides 32 grams of carbohydrates, 65 grams of fat, and 29 grams of protein. how many cups of rice, tofu, and peanuts should he eat?