Consumer Awareness The United States Postal Service first class mail rates are $0.41 for

Chapter 1, Problem 62

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Consumer Awareness The United States Postal Service first class mail rates are $0.41 for the first ounce and $0.17 for each additional ounce or fraction thereof up to 3.5 ounces. A model for the cost (in dollars) of a first class mailing that weighs 3.5 ounces or less is given below. (Source: United States Postal Service) (a) Use a graphing utility to graph the function and discuss its continuity. At what values is the function not continuous? Explain your reasoning. (b) Find the cost of mailing a 2.5-ounce letter.

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