Four more than two-thirds of a number is 22 what is that number

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

If i have one apple and give you the apple, how many apples do i have?

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?