Solve using suitable property 459×65+459×10+459×25

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

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?