What is the slope and point

Find the solution of this system of equation -7x+y=-20 9x-3y=36

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.

Carl is hanging pictures in his home. there is a space on a wall that has a width of 4 feet. carl has pictures with different widths. which picture width would fit in the space on the wall? a. 46 inches b. 60 inches c. 50 inches d. 54 inches