Helen purchased 3 books from an online bookstore and received a 20% discount on her total order.Each book cost the same amount. The shipping cost was $10 and was not discounted. Write anexpression that can be used to represent the total amount Helen paid for 3 books plus the shippingcost. Simplify the expression, and then identify each term, the constant term, and the factors andcoefficients of the terms that contain a variable.