The point (3, -4) is on the terminal side of an angle 0. what is cos 0? a. -3/5, b. 3/5, c. -3/4, d. 3/4, e. 3

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?