Which expressions show the volume and the surface area of this cube-shaped packing box?

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?

What is the y-intercept of the line with the equation 3x + 4y = 12?