Can someone me with 11 and explain how you got it

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

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Reflect the point (7,0) across the y-axis