When a polling company calls a telephone number at random, there is only a 9% chance that the call reaches a live person and the sur- vey is successfully completed.10 suppose the randorm digit dialing machine makes 15 calls. let x - the num ber of calls that result in a completed survey

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

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?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !