A bookstore marks up the price of a book by 40% of the cost from the publisher. Therefore, the bookstore's price to the student, P (x)(in $) after a 7.3% sales tax, is given by P(x) = 1.073 (x+ 0.40x), where x is the cost of the book from the publisher. Evaluate P(40) and interpret the meaning in the context of this problem. Round to the nearest cent. If the cost of the book from the publisher is $D, the cost to the student after the bookstore markup and sales tax is 3D