PLEASE HELP ME ASAP PLS

What’s the domain of this function? fast

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 are the first 4 terms in the multiplication pattern given by the formula 2×4n