1) If an investor can buy-and-hold a tax advantage (i.e., tax exempt) security that yields 6.25% and faces a marginal tax rate of tax rate of 20%, what rate of return must be earned on a taxable investment to match the tax-exempt yield?

2) If a taxable yield for a given investment is 11.15%, and the investor faces a marginal tax rate of 25%, what is the equivalent yield on a tax-free investment?

3) If an investors buys 200 shares of FYI and has an initial margin requirement of 60%, and the total value of the purchase is $8000, what is the implied per share purchase price of FYI and the dollar amount of the margin loan.

4) If an investor account is under-margined, then the following action or actions need to be taken: I. Add cash or securities II. Pay off part of loan III. Sell shares and apply proceeds to pay off part of loan