Please help In the picture!!

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 describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?