1- Tom has just signed a health insurance plan which requires him to pay $280 per month for 6 months. The first payment is due today and the interest rate is 12% per annum. What is the present value of his payments?
2- Calculate the present value of a perpetuity with the first payment made two years from today. Assume the annual amount is $600 and the interest rate is 5% per annum.
Could you please show me how to get the answer both manually and with the financial calculator HP10bll+ use.