Answer:
interest rate for year 1 = 3%
interest rate for year 2 = ( 3% + 5% )/2 = 4%
interest rate for year 3 = ( 3% + 5% + 13% )/ 3 = 7%
interest rate for year 4 = ( 3% + 5% + 13% + 15%) / 4 = 9%
Explanation:
Interest rates :
interest rate for year 1 = 3%
interest rate for year 2 = ( 3% + 5% )/2 = 4%
interest rate for year 3 = ( 3% + 5% + 13% )/ 3 = 7%
interest rate for year 4 = ( 3% + 5% + 13% + 15%) / 4 = 9%
Attached below is the plot