Salma carns 43 dollars per week working part-time at a book store. She makes one dollar more for each book that she sells. The amount, A (In dollars), that Salma eams in a week if she sells b books is given by the following function.
A(b) = 43 + b
How much does Salma earn in a week if she sells 33 books?
m.

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?