Marco predicted that he would sell 180 blankets. He actually sold 150 blankets. What are the values of A and b in the given table? Round to the nearest tenth if necessary. Percent Error Item Approximate value Exact value Error Absolute error Ratio Percent error Blankets 180 150 A b

The absolute error is the difference between the predicted and actual sales: |180 − 150| = 30 blankets. The ratio is the absolute error divided by the exact value, so A = 30/150; as a percent, that is 20%. Thus, the correct choice is B: A is 30 over 150 and b is 20 percent.

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