(1 point) (Exercise 2.3) At a certain interest rate the present values of the following two payment patterns are equal: (i) $400 at the end of 6 years plus $400 at the end of 12 years. ii) $650 at the end of 6 years. At the same interest rate $350 invested now plus $400 at the end of 6 years will accumulate to P at the end of 12 years. Calculate P.

(1 point) (Exercise 2.11) AA deposits $300 today and another $400 in five years into a fund paying simple interest of 7% per year. BB will make the same two deposits, but the $300 will be deposited nn years from today and the $400 will be deposited 2n2n years from today. BB's deposits earn an annual effective rate of 8.5%. At the end of 9 years, the accumulated value of BB's deposits equals the accumulated value of AA's deposits