Q 6-15 An annuity immediate makes 11 annual payments of $100, and a final larger payment at the end of the 12th year. At i = 3.5%, the time 0 present value of all payments is $1,000. (a) Calculate the amount of the final payment. (b) Determine the time 8 present value of all remaining payments assuming that the payment at the end of the 8th year has already been made. And, use i 1%