As a jewelry store manager, you want to offer credit, with interest on outstanding balances paid monthly. To carry receivables, you must borrow funds from your bank at a nominal $9\%,$ monthly compounding. To offset your overhead, you want to charge your customers an EAR $($or EFF$\%)$ that is $3\%$ more than the bank is charging you. What is the EAR the customer would be paying if you provide this service?