Suppose the term structure of risk-free interest rates is shown below. What is the present value of an investment that pays $250 at the end of each of years 1,2 , and 3 ? If you wanted to value this investment correctly using the annuity formula, which discount rate should you use? The present value of the investment is $ (Round to the nearest cent.) To value this investment correctly using the annuity formula, use the discount rate %. (Round to five decimal places.)