LOOK AT PHOTO, please help! Alan is a software salesman. Let be Alan's total pay (in dollars). Let be the number of copies of History is Fun he has sold. Alan has copies available to sell. Suppose that gives as a function of for these available copies. Identify the correct description of the values in both the domain and range of the function. Then, for each, choose the most appropriate set of values.

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

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?

Which of the following best describes the delian problem?