Old Economy Traders opened an account to short sell 2,200 shares of Internet Dreams at $64 per share. The initial margin requirement was 50%. (The margin account pays no interest.) A year later, the price of Internet Dreams has risen from $64 to $70, and the stock has paid a dividend of $2.00 per share. a. What is the remaining margin in the account? (Omit the "$" sign in your response.) Remaining margin $ b. If the maintenance margin requirement is 30%, will Old Economy receive a margin call? No Yes c. What is the rate of return on the investment? (Round your answer to 2 decimal places. Negative answer should be indicated by a minus sign. Omit the "%" sign in your response.) Rate of return %