A car dealer will sell you a used car for $6,498 with $798 down and payments of $162.51 per month for 48 months. What is the simple interest rate? (Round your answer to the nearest tenth of a percent.)

Find the unpaid balance on the debt. (Round your answer to the nearest cent.) After 7 years of monthly payments on $150,000 at 3% for 25 years.

For a three year bond of $2,400 at a simple interest rate of 11% per year, find the semiannual interest payment and the total interest earned over the life of the bond. The semiannual interest on the bond is $. (Simplify your answer. Type an integer or a decimal. Round to the nearest cent as needed.) The total interest on the bond is $ (Simplify your answer. Type an integer or a decimal. Round to the nearest cent as needed.)

The simple interest on a $7,600 loan at 7% per year amounted to $4,788. When did the loan mature?