To cover the initial margin requirement of 60%, you deposited funds after short-selling 110 shares of common stock at $46 per share. a. What is your rate of return if you cover at $51, assuming no dividends and no addition or removal of funds from the account? (Negative value should be indicated by a minus sign. Round your answer to 1 decimal place.) Rate of return % b. At what price would you receive a margin call if the minimum margin requirement is 30%? (Round your answer to 2 decimal places. Omit $ sign in your response.) Price $