47. Assume you work for an employer who will contribute $60 a week for the next 20 years into a retirement plan for your benefit. At a discount rate of 9 percent, what is this employee benefit worth to you today?

48. You just won the lottery! Your prize begins with a payment of $10,000, which you will receive one year from today. Every year forever after, the payments will increase by 4 percent annually. What is the present value of your prize at a discount rate of 6 percent per year?

HOW WOULD I PLUG THESE QUESTIONS INTO A HP-12C CALCULATOR?