7. Calculating Annuity Values [LO1] If you deposit $4,500 at the end of each of the next 20 years into an account paying 9.7 percent interest, how much money will you have in the account in 20 years? How much will you have if you make deposits for 40 years?

11. Calculating Perpetuity Values [LO1] In the previous problem, suppose a sales associate told you the policy costs $800,000. At what interest rate would this be a fair deal?

31. Calculating Interest Expense [LO2] You receive a credit card application from Shady Banks Savings and Loan offering an introductory rate of 1.25 percent per year, compounded monthly for the first six months, increasing thereafter to 17.8 percent compounded monthly. Assuming you transfer the $8,000 balance from your existing credit card and make no subsequent payments, how much interest will you owe at the end of the first year?