Tina has saved $20,000 from her summer jobs. Rather than work for a living, she plans to buy an annuity from a trust company and become a beachcomber in Fiji. The annuity will pay her a certain amount each month for the rest of her life and is calculated with an interest rate of 6% per year, compounded monthly. Tina estimates that she will live 55 more years and that she will need at least $150 per month to live in Fiji. The flight to Fiji will cost her $1,200. a) With what she has saved up, how much would she have available to spend each month? b) Can she retire now? c) How much excess or deficit does she have from her estimated requirements? d) How much would she have to save up, if she wanted to have $200 per month to live in Fiji, and the best intere rate she can get on an annuity is 2% per year, compounded yearly