(Related to Checkpoint 5.6) (Solving for i ) You are considering investing in a security that will pay you $4,000 in 28 year a. If the appropriate discount rate is 12 percent, what is the present value of this investment? b. Assume these investments sell for $2,229 in return for which you receive $4,000 in 28 years. What is the rate of return investors earn on this investment if they buy it for $2,229