Please answer setp by step . This one is very difficult for me . Thank you very much .

5. The cash flow below presents the expected 1-year financial transactions in Peter's saving account that no interest is applied for interperiod transactions. The interest rate is expected to be adjusted from 16% per year compounded quarterly to 5% per quarter for the last quarter. t $18,000 A $11,000 $8,000 $6,000 $6,000 A A A 3 4 5 6 7 8 9 10 11 12 quarter $3,000 $6,000 5.1 Determine the account balance at the end of the 9th month. (15 points)