A) -3 · x = -21

b) -7x + 16 = 2x - 20
help pls

The first hexagon is dilated to form the second hexagon select the answers from the drop box menus to correctly complete the statement

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

Factor this polynomial completely x^2-64