20 ! plz i have 3 mins. on saturday, the bookstore sold x books. on sunday, the bookstore sold 2 more books than on saturday. which expression represents the total number of books sold over the weekend? 2x2x x+2x+2 2x+22x+2 2(x+2)

Mary and roberto bought identical backpacks at different stores. mary's backpack originally cost $65 and was discounted 25%. roberto's backpack originally cost $75 and was on sale for 30% off on the original price. which backpack was the better buy?