Each day, about 75,000 people visit paris, france. use the commutative property to write two equivalent expressions that could be used to find the number of people that visit over a 5-day period.

pls

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?