Assume that MM's perfect capital markets conditions are met and that you can borrow and lend at the same 5% rate as Firm X. You have $5000 of your own money to invest and you plan on buying Firm Y stock. Using homemade leverage, how much do you need to borrow in your margin account so that the payoff of your margined purchase of Firm Y stock will be the same as a $5,000 investment in Firm X stock?