11) Eight people went to a movie and three of them purchased a drink. Write an expression you could use to solve for the total cost if the tickets are $12 each and the drinks are $2.50 each.
12) Solve using PEMDAS
20 ÷ 4 – 2 + 5 x 8
13) If you can purchase 3 pounds for $12, how many pounds can you purchase for $40?