Today your brother borrowed money from a bank for a down payment on a home. He did so by taking out a 30-year loan with monthly payments. He complained about all the paperwork he had to sign, including one disclosure that told him the total amount of interest he would pay over the life of the loan. Your brother didnt remember the exact amount, but he did remember that the total amount of interest paid over the life of the loan was greater than the principal on the loan! (The principal on the loan is the amount today that he borrowed from the bank.) Given this information, your brothers annual percentage rate (compounded monthly) must have been at least what percent? Please round to the nearest tenth of a percentage point (e.g. 3.6% or 9.1%).