suppose you want to buy a notebook and several pencils. the notebook cost $2.10 and the pencils are $0.35 each. How many pencils
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Check the picture below.
notice, the dashed line is the "continuation" of the graph, however, for the constraints in the piece-wise, is excluded.
notice, the dashed line is the "continuation" of the graph, however, for the constraints in the piece-wise, is excluded.