Use the sinking fund formula shown to the right to determine the monthly payment needed to accumulate $190,000 with 6% interest are compounded monthly for 21 years. A p= nt - 1 The monthly invested payment is $ (Round up to the nearest cent.)

Suppose a 40-year old person deposits $8000 per year in an individual retirement account until age 65. Find the total in the account with the following assumption of an interest rate. (Assume quarterly compounding, with payments of $2000 made at the end of each quarter period.). Find the total amount of interest earned. 7%     The total in the account $___. (Round to the nearest CENT as needed.)

For 7 years, Janet saved $450 at the beginning of every month in a fund that earned 4.75% compounded annually. a. What was the balance in the fund at the end of the period?   Round to the nearest cent b. What was the amount of interest earned over the period?   Round to the nearest cent

Assume that you want to have $ 3100 saved in a sinking fund in 1 year. The account pays 4.5% compounded monthly. What should be your monthly payments?