I have asked this question multiple times and no one has answered can someone please help me

The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation