Find the measure of angle a

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

The graph of g(x) is a translation of y = which equation represents g(x)?

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals