You plan to go to graduate school in 4 years to earn your Masters degree. The Masters program is two years long (i.e., you will have to pay tuition in year 4 and year 5).

Today the Masters program costs $18,000 per year, but the cost is rising at a rate of 5% per year.

If your investment account earns 6% APR, compounded monthly, how much do you have to save each month, starting next month, for the next 4 years to have just enough to cover the cost of your Masters degree?