Can someone please help me ASAP

The table respent two linear functions the equation respented by the first tables is given

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

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2