Please show formulas!!!

Suppose that Intel 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 Intel immediately changes to (i) $44; (ii) $40; (iii) $36? What is the relationship between your percentage return and the percentage change in the price of Intel? b. If the maintenance margin is 25%, how low can Intel's price fall before you get a margin call? c. How would your answer to (b) change if you had financed the initial purchase with only $10,000 of your own money? d. What is the rate of return on your margined position (assuming again that you invest $15,000 of your own money) if Intel is selling after one year at (i) $44; (ii) $40; (iii) $36? What is the relationship between your percentage return and the percentage change in the price of Intel? Assume that Intel pays no dividends. e. Continue to assume that a year has passed. How low can Intel's price fall before you get a margin call?

Data Input
Initial share price		$40.00
Shares purchases		500
Equity		$15,000.00
Interest rate		8%
Maintenance margin		25%
Borrowed funds		$5,000.00
initial percentage equity		-32.60869565	0.75
a.
i.	New stock price =		$44.00	What is the relationship between your percentage return and the percentage change in the price of Intel? It increases the return when there is a positive return. However it will also enhance your loss making your loss bigger.
	Profit =		$2,000.00
	Percentage change of net worth (percentage return)		13.33%
ii.	New stock price =		$40.00
	Profit =
	Percentage change of net worth (percentage return)
iii.	New stock price =		$36.00			c.
						Initial share price		40
	Profit =					Shares purchases		500
	Percentage change of net worth (percentage return)					Equity		10000
						Interest rate		8.00%
b.	Margin call price =		$0.00			Maintenance margin		25.00%
d.						Borrowed funds =		10000
i.	New stock price =		$44.00			Margin call price =		9875	?
	interest =		400	400
	profit =		$2,000.00	1600
	Rate of return =		13.33%	10.67		e.
						Margin call price =
ii.	New stock price =		$40.00
	interest =
	profit =
	Rate of return =
iii.	New stock price =		$36.00
	interest =
	profit =
	Rate of return =

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