Someone please me laugh im bore in this dang house please dont be corny

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

Can anyone me with 32,33,36,37,and 40.

Find the roots of the equation below. x^2 - 6 + 9 = 0