6. Compute the present worth (P) for the cash flows with the different periodic interest rates specified. The cash flows occur at the end of each year over six years. (Ans.S2140) $1.000 $1.000 $1.000 8% compounded annually 9% compounded quarterly 12% compounded monthly 2 6 7. An engineer who is saving for her retirement plans to deposit $500 every semiannually, starting one quarter from now, into an investment account. If the account pays interest at 12% per year, compounded quarterly, the total she will have at the end of 25 years is closest to: (Draw the Cashflow) (a) $50,000 (b)$56,400 (c) $79,700 (d) $112,800