Pls help extra points and mark brainlist

Show me how you find x and determine what x is you i appreciate it : )

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

What function has a range {yly< 5}? question on picture above^