Which formula(s) would one use to compute a company's required equity rate of return that is based only on the company's payout policy and common stock value(s)? R=rf+(rmrf) y=a+(x) r=[(Div1+P1)/P0]1 rxy=COV(y,x)[(y)(x)] r=[(Div1...H+PH)/PO)]1/H1 SGR=ROEX Plowback ratio