someone please help me solve the next part

Suppose the term structure of risk-iree interest rates is shown below. What is the present value of an investment that pays $100 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 $285.6. (Round to the nearest cent.) To value this investment correctly using the annuity formula, use the discount rate %. (Round to five decimal plaz2yes.)