A patient takes vitamin pills. Each day he must have at least 630 IU of vitamin A, 5 mg of vitamin Upper B 1, and 80 mg of vitamin C. He can choose between pill 1, which contains 150 IU of vitamin A, 1 mg of vitamin Upper B 1, and 10 mg of vitamin C, and pill 2, which contains 90 IU of vitamin A, 1 mg of vitamin Upper B 1, and 40 mg of vitamin C. Pill 1 costs 25cents, and pill 2 costs 50cents. Complete parts a and b below.