Find the average of the list of numbers.- 18, - 29, - 17, - 12

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?