Dée trader opens a brokerage account and purchases 400 shares of internet dreams at $28 per share. she borrows $3,000 from her broker to pay for the purchase. the interest rate on the loan is 12%. a. what is the margin in dée’s account when she first purchases the stock? b. if the share price falls to $18 per share by the end of the year, what is the remaining margin in her account? (round your answer to 2 decimal places.) c. if the maintenance margin requirement is 30%, will she receive a margin call? yes no d. what is the rate of return on her investment? (negative value should be indicated by a minus sign. round your answer to 2 decimal places.)