1. Calculate the accumulated value at the end of 3 years of 250 payable now assuming an interest rate equivalent to a discount rate of 12% convertible monthly.
2. Calculate the present value of $1,000 payable in 10 years using a discount rate of 5% convertible quarterly.
3. A deposit of $500 is invested at time 5 years. The constant force of interest is 6% per year. Determine the accumulated value of the investment at the end of 10 years.