12. dan works at a hardware store. the employee discount is determined by the formula d = 0.15 (c – 10). use the inverse of this function to find the cost of the item for which dan received an $18.00 discount. a. find the inverse function that models cost as a function of the discount. b. evaluate the inverse function for d = 18. %3d c. what was dan's final cost for this item?

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?

Can some one me with these questions

Which of the following best describes the figure?