If your able to help me please do, really need to finish this

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

15/16 as a decimal rounded to the nearest hundredth

For what value of (y) is 3^3/3^y =1/9