1. Brown Office Supplies recently reported $13,000 of sales, $8,250 of operating costs other than depreciation, and $1,750 of depreciation. It had $9,000 of bonds outstanding that carry a 7.0% interest rate, and its federal-plus-state income tax rate was 25%. How much was the firm's earnings before taxes (EBT)?

2. You plan to invest in securities that pay 9.8%, compounded annually. If you invest $5,000 today, how many years will it take for your investment to grow to $9,140.20?

3. Your girlfriend just won the Florida lottery. She has the choice of $12,500,000 today or a 20-year annuity of $1,050,000, with the first payment coming one year from today. What rate of return is built into the annuity?