need part b & d

De Trader opens a brokerage account and purchases 100 shares of internet Dreams at $56 per share. She borrows $3,500 from her broker to help pay for the purchase. The interest rate on the loan is 9%. Required: a. What is the margin in Dee's account when she first purchases the stock? Answer is complete and correct. b. If the share price fals to $46 per share by the end of the year, whot is the remaining margin in her account? c. If the maintenance margin requirement is 30%, will she receive a margin cal? No Yes d. What is the rate of return on her imvestment? (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places)