*What is the discounted cash flow concept, and why is it essential for financial managers to understand and employ this important concept? *What are the methods associated with evaluating single or periodic payments, and what is at least 1 application of each? Discuss the different methods that can be used to calculate these amounts, and explain how at least 1 of these models can be used. How can the time value of money models or formulas be used to determine the rate of return for an investment or the time it will take for a current sum to grow to a desired future amount? *Discuss the “Rule of 72” and how it can be used to estimate how long it takes for money to double at various rates of return. *Identify and recommend at least 1 credible Web site that an investor can visit to find the current market value of market indexes such as the Dow Industrial Averages.