8.) A businessman wants to buy a truck. The dealer offers to sell the truck for either $ 120 comma 000 now, or six yearly payments of $ 25 comma 000. Which of the following is closest to the interest rate being offered by the dealer?

9.) An investment pays you $30 comma 000 at the end of this year, and $15 comma 000 at the end of each of the four following years. What is the present value (PV) of this investment, given that the interest rate is 5% per year?