A circle has a radius of 4 ft, and an arc of length 9 ft is made by the intersection of the
circle with a central angle. Which equation gives the measure of the central angle, e?

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?