12. Sally lends 2,000 to Tim. Tim agrees to pay back the loan over 10 years with monthly payments payable at the end of each month. Sally can reinvest the monthly payments from Tim in a savings account paying interest at 8.4%, compounded monthly. The yield rate earned on Sally's investment over the 10-year period turned out to be 10.18% compounded semiannually. What nominal rate of interest, compounded monthly, did Sally charge Tim on the loan