Maria has baked a cake for cathy birthday. the dimensions of the cake are 13 1/2 inches by 6 3/4 inches. the cake is going to be cu t into squares with each piece being approximately 5.55% of the cake, which should give a total of pieces of cake with each piece of having a side length of inches.

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?