The following table shows U.S. first-class stamp prices
Chapter 2, Problem 2.9.8(choose chapter or problem)
The following table shows U.S. first-class stamp prices (per ounce) over time. a. Construct a step function describing stamp prices for 20062010. b. Graph the function. Be sure to specify whether each of the endpoints is included or excluded. c. In 2008 the post office created forever stamps that (if you bought them then, at 42 cents) would always be valid. How would this alter the graph if you used only forever stamps?
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