Problem 6-19 Break-even point in interest rates (L06-3) Carmen's Beauty Salon has estimated monthly financing requirements for the next six months as follows: January February March $8,300 2,300 3,300 April May June $8,300 9.300 4,300 Short-term financing will be utilized for the next six months. Projected annual interest rates are: January February March 76 8 11 April May June 140 12 12 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.) Interest rate