Suppose that Xtel currently is selling at $50 per share. You buy 700 shares using $28,000 of your own money, borrowing the remainder of the purchase price from your broker. The rate on the margin loan is 7%. a. What is the percentage increase in the net worth of your brokerage account if the price of Xtel immediately changes to (a) $56; (b) $50; (c) \$44? (Leave no cells blank - be certain to enter " 0 " wherever required. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) b. If the maintenance margin is 20%, how low can Xtel's price fall before you get a margin call? (Round your answer to 2 decimal pleces.) Price c. How would your answer to requirement 2 would change if you had financed the initial purchase with only $17.500 of your own money? (Round your answer to 2 decimal places.) Strike price d. What is the rate of return on your margined position (assuming again that you invest $28,000 of your own money) if Xtel is selling after one year at (a) \$56; (b) $50; (c) '\$44? (Negative values, should be indicated by a minus sign. Round your answers to 2 decimal places.) e. Continue to assume that a year has passed. How low can Xtel's price fall before you get a margin call? (Round your answer to 2