You are bullish on Landmark stock. The current market price is $50 per share, and you have $15,000 of your own to invest. You borrow an additional $5,000 from your broker at an interest rate of 6% per year. Assume a 50% initial margin requirement. How much margin does this investment require? By how much do you exceed that requirement? If Landmark stock goes up by 20%. what will your rate of return be for the year? Assume you liquidate your position. How far does the price of Landamark have to fall for you to get a margin call if the maintenance margin is 30%? Assume the price fall happens immediately