6. Joe & Sally want to purchase $6,750 worth of furniture from Olums, using in store financing. The financing program requires 3 years of monthly payments in the form of an annuity due. The APR on this financing is 8.4%, compounded monthly. What will their monthly payment be?

7. Twenty years ago Seth purchased an investment for $14,990. Today that same investment is valued at $55,000. If the average annual rate of inflation over the past twenty years has been 3.1%, what is the real return on this investment?