A $200,000 30 year mortgage with a contract rate of 8.94%, $3000 closing costs (lawyer, appraisal, and transfer tax) and $1,000 in discount points (i.e mortgage setup fee). The monthly mortgage payment is determined to be $1600. what will be the effective borrowing rate if the borrower decides to pay off the loan at the end of year 8? Assume that the mortgage is based on monthly compounding.