550 more than the product of H and P

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

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.