You have $32,800 to invest in Sophie Shoes, a stock selling for $80 a share. The initial margin requirement is 80 percent. Do not round intermediate calculations. Round your answers to two decimal places. Use a minus slon to enter negative values, if any. a. Ighoring taxes and commissions, calcutate your rates of return if the stock rises to $100 a share and ur it declines to $50 a share assuming you pay cash for the stock. Rate of return if the stock rises to $100 a share: Rate of return if the stock dedines to $50 a share: of b. Ignoring taxes and commissions, calculate your rates of return if the stock rises to $100 a share and if it decines to $50 a share assuming you buy it using maximum leverage. fate of retum it the stock rises to $100 a share: Pate of return if the stock dedines to $50 a share