We r making directional arrow each arrow is to be pained red how much area needs to be painted red

How can constraints be used to model a real-world situation?

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?

Urgent? will give brainliest to the first correct answer what is the area of the figure?