Find the value of 4x-6y when x=3 and y=-2

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic.org

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?

Will mark brainliest! ( explain the answer too, it can be one sentence)