A bookstore marks up the price of a book by 25 of the cost from the publisher Therefore the bookstore s price to the student P x in after a 7 5 sales tax is given by P x 1 075 x 0 25x where x is the cost of the book from the publisher Evaluate P 70 and Interpret the meaning in the context of this problem Round to the nearest centavo If the cost of the book from the publisher is 1 the cost to the student after the bookstore markup and sales tax is X 5