The greatest number of people drinks how many glasses of water number of glasses of water frequency 5 3 6 8 7 3 8 5 9 3 a.)7 b) 6 c) 8 d. 5

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?