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U.S. POSTAGE The graph shown below gives the first-class postage rates in 2007 for mailing letters weighing up to 5 ounces. In the graph, the parallel lines crossing the vertical axis are a symbol which indicates a break in the labeling of the axis. The break enables us to omit a large portion of the grid that would not be used.
Find the cost of postage to mail a 5-oz letter.
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