Set up the objective function and the constraints, Jack has a casserole and salad dinner. Each serving of casserole contains 200 calories, 3 milligrams of vitamins, and 7 grams of protein. Each serving of salad contains 30 calories, 4 milligrams of vitamins, and 1 gram of protein. Jack wants to consume at least 21 milligrams of vitamins and 29 grams of protein but keep the calories at a minimum. How many servings of each food should he eat? (Let x represent the number of servings of casserole, y the number of servings of salad, and C the number of calories.) ---Select--- | C = vitamins protein x 0, y 0 subject to