DeWayne stands on a rock that is (+10) feet compared to the surface of the water, as shown with the X below. What is the distance from where DeWayne is standing to (–10) feet below the surface of the water?

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)