please show work step by step please! this is due in an hour :(

The velocity v of an Earth satellite varies directly as the square root of its mass m, and inversely as the square root of its distance r from the center of Earth. If the mass is halved and the distance is doubled, how is the speed affected? Set up the general variation equation using k as the constant of proportionality. V= The speed is quartered. K unaffected. quadrupled. doubled. halved