Which of the following transactions adds to u. s. gdp for 2006?
a. in 2010, marvin windows manufactures 20 windows that will eventually be installed in an office building in minneapolis. the windows remain in marvin’s inventory at the end of 2010.
b. an irish marketing consultant works in boston during the summer of 2010 and earns $50,000 during that time.
c. when tim and tina were both single, they lived in separate apartments and each paid $750 in rent. tim and tina got married in 2010 and they bought a previously unoccupied house that, according to reliable estimates, could be rented for $1,550 per month.
d. all of the above transactions add to u. s. gdp for 2010.

Suppose that xtel currently is selling at $40 per share. you buy 500 shares using $15,000 of your own money, borrowing the remainder of the purchase price from your broker. the rate on the margin loan is 8%. a. what is the percentage increase in the net worth of your brokerage account if the price of xtel immediately changes to (a) $44; (b) $40; (c) $36? (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 25%, how low can xtel’s price fall before you get a margin call? (round your answer to 2 decimal places.) c. how would your answer to requirement 2 would change if you had financed the initial purchase with only $10,000 of your own money? (round your answer to 2 decimal places.) d. what is the rate of return on your margined position (assuming again that you invest $15,000 of your own money) if xtel is selling after one year at (a) $44; (b) $40; (c) $36? (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 decimal places.)