A long distance phone service charges $0.40 for the first 10 minutes and $0.05 for each additional
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A long distance phone service charges $0.40 for the first 10 minutes and $0.05 for each additional minute or fraction thereof. Use the greatest integer function to write the cost C of a call in terms of time t (in minutes). Sketch the graph of this function and discuss its continuity.
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We begin with a standard price of 040 for the first 10 minutes which means t...View the full answer
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