When a customer wants pie for dessert, you cut whole pies into 7 equal slices. at the end of your shift, 3/7 of a cherry pie, 2/7 of an apple pie, 3/7 of a peach pie, and 5/7 of a blueberry pie remain. how much pie remains, as a fraction of a whole pie? a) 13/ 7 b) 13/ 28 c) 90/ 7 d) 90/ 28 e) 90/ 2,401