Pls find volume for 40 points

9/10 divide by -3/15 as a mixed number

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

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?