What is a reflex angle?

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

Which measure is equivalent to 110 ml? 0.0110 l 0.110 l 1.10 l 11,000 l

What is the value of x in the this question ?