probability

1. Find the simple interest. Assume a 360-day year. $6727.06 at 2.4% for 68 days 2. If $2100 earned simple interest of $58.80 in 6 months, what was the simple interest rate? 3. Find the compound amount for the deposit and the amount of interest earned. $2000 at 3% compounded annually for 6 years 4. Find the compound amount for the deposit and the amount of interest earned. $870 at 6.7% compounded semiannually for 13 years