The cables of a suspension bridge are in the shape of a parabola, as shown in the figure. The towers supporting the cable are 900 feet The cable is feet from the road surface at a point 225 feet from the center of the bridge. How many feet is the cable from the road surface at a point 225 feet from the center of the bridge​

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?