Liam bought 81 inches of plastic pipe. he cut the pipe into pieces that were each 9 inches long. how many pieces of cut pipe did he have? a. 8 b. 9 c. 11 d. 13

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?