When is the most ideal time to pay off a loan?

What value of x will make the triangles similar by the sss similarity theorem?

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

If the discriminant if a quadratic equation is 4 which statement describes the roots?