You are considering investing in a security that will pay you $$$$2,000$ in $34$ years. a$.$ If the appropriate discount rate is $11$ percent$,$ what is the present value of this$$ investment? b$.$ Assume these investments sell for $$$$507$ in return for which you receive $$$$2,000$ in $34$ years. What is the rate of return investors earn on this investment if they buy it for $$$$507?$