Solve the system of linear equations by graphing.
y=-42 +3
40 - 2y = 6

Ihonestly have no clue if it's each or none.

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?

Find the volume of the wedge cut from the first octant by the cylinder z=12-3y^2 and the plane x+y=2.