PLEASE HELP ME. I DON'T UNDERSTAND, GEOMETRY

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

If u good at math hit me up on insta or sum @basic_jaiden or @ and