First Bank is sending university alumni an invitation to obtain a credit card, with the name of their university written on it, for a nominal 9.9 percent interest per year after 6 months of 0 percent interest. Interest is compounded monthly, IF you fail to make the minimum payment in any month, your interest rate could increase (with-out notice) to a nominal 19.99 percent per year. Compute the effective annual interest rates the credit company is charging in both cases