The quadratic equation 4tx^2-7x+9t=0 has two equal roots ad t>0

Can someone check my answer? you : )

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 abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?