Problem 3: Security You have been given a financial security that pays $10 per year for 8 years. If the discount rate is 9%, what is the security worth (its net present value or NPV)? Do it two ways: Paymentt a. Use a formula approach where each payment is discounted: PV where t is (1+K) the index for years (1,2,...8), K is the discount rate (9%) and Payment is the payment in year t ($10 each year). b. Use the excel function NPVO) = 2