Please please please help!

Which formula gives the area of a triangle? a=1/2(b+h)

Josephine has a great garden with and area of 2x2 + x - 6 square feet

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