PHONE EXPENDITURES The average annual expenditures (in dollars) for residential and
Chapter 2, Problem 103(choose chapter or problem)
PHONE EXPENDITURES The average annual expenditures (in dollars) for residential and cellular phone services from 2001 through 2006 can be approximated by the functions and where represents the year, with corresponding to 2001. (Source: Bureau of Labor Statistics) (a) Find and interpret (b) Use a graphing utility to graph and in the same viewing window. (c) Find Use the graph in part (b) to verify your result.
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