IM TIMED HELP THANK YOU Dion predicted that he would sell 87 art prints. He actually sold 100 art prints. What are the values of a and b in the table below? Percent Error Item Approximate value Exact value Error Absolute error Ratio Percent error Art prints 87 100 a b a = negative 13; b = negative 13 a = negative 13; b = 13 a = 13; b = negative 13 a = 13; b = 13