a. What amount of money should you pay each month to retire a $12000 debt in five years if the interest rate on money is 10% nominal annual interest rate compounded monthly?

b. What amount of money today is equivalent to $100 per month compounded quarterly for ten years at 5%?

c. If you buy a piece of land for $10,000 and spend $1000 per year on taxes, what is your rate of return if you sell the land for $20,000 in 6 years?

d. If the equivalent annual interest rate is 15%, what is the monthly rate that would be compounded to achieve this?