3х – 5y = 15
у = 2х + 4

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

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)