The shape of f(x) = x2, but shifted two units to the right and seven units down

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?

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?