Carmen's Beauty Salon has estimated monthly financing requirements for the next six months as follows: January February March $10,200 April 4,200 May 5,200 June $10,200 11,200 6,200 Short-term financing will be utilized for the next six months. Projected annual interest rates are: 6% April May 0 June 13% 12 12 January March What long-term interest rate would represent a break-even point between using short-term financing and long-term financing? (Round your monthly interest rate to 2 decimal places when expressed as a percent. Round your interest payments to the nearest whole cent. Input your answer as a percent rounded to 2 decimal places.) nterest rate