Can someone please help me solve this? I have no idea how to solve

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

X-intercept=-5 y-intercept=2 the equation of the line is

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .