1. An annuity-due has 25 yearly payments. The first payment is 100, and payments increase by 50 each year until they reach 350, after which they stay level at 350. Find the present value of this annuity at annual effective interest rate 6.5%. 2. In the following sequence of payments, payments are made at the beginning of each year. 1, 1,035, (1.035)2, (1.035)3, (1.035)12. Given i 7.25%, find the accumulated value of this sequence of payments one year after the last payment. =