Ay - b = c solve for y

7x+8y=-18, 4x-9y=-3 solve the system of equations

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

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )