Once a week Mrs. Baker makes sugar cookies. The first week she makes the recipe, she uses the full 2 cups of sugar called for. Each week after that, she reduces the amount of sugar by one third.
(a) How much sugar does she use for the cookies on the fifth week?
(b) How much sugar does she use for cookies over half a year?
(c) If Mrs. Baker became immortal and baked cookies every week for all eternity, how much sugar would she use?