1. Assume that you are the CFO of Amazon. Why would you care about what the world thinks about Amazon's ethics?

2. Is it prudent to buy or sell a share of stock in a company like Facebook using only the results of two or three ratio calculations? Information on Facebook is widely available, so it's likely to be correct. Why waste time with a detailed ratio review?

3. Susie and Tim are twins. Susie invests $5,000 at age 20 and earns 5% compound interest. Tim invests $10,000 at age 40 and earns 5% compound interest. No matter how long they live, Tim will never have as much money as Susie. Explain why.