(i) a 30.15 = 6 (iii) (ii) The actuarial present value of a 16 year temporary increasing life annuity-due on (30) providing a first payment of 5000 and subsequent annual payments increasing 1000 per year is 75,000. Z is the present value random variable for a 15 year temporary decreasing life annuity-immediate on (30) providing a first payment of 7500 and subsequent annual payments decreasing by 500 per year. Calculate E[Z].