A store owner paid $15 for a book. She marked up the price of the book by 40% to determine its selling price. A.) What is the selling price, in dollars, of the book?

B.) A customer buys a different book that has an original selling price of $38. The book is discounted 25%. The customer must pay a 6% sales tax on the discounted price of the book. What is the total amount, in dollars, the customer pays for the discounted book?