Domain and range of function

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

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?

Which equation can be solved to find x the measure of jk in the apex