Simonne predicted that she would sell 99 picture frames. She actually sold 88 picture frames. What are the values of a and b in the table below? Round to the nearest tenth if necessary. Percent Error Item Approximate value Exact value Error Absolute error Ratio Percent error Picture frames 99 88 a a= b= 11.1% 99 b= 12.5% 88 88 O a= 99 b= 88.9% b= 100% 11