Problem

Cell Phone Subscribers The figure shows the total number of cellular phone subscribe...

Cell Phone Subscribers The figure shows the total number of cellular phone subscribers in the United States from 2000 to 2008.

a. Draw a line tangent to the graph at point P and estimate its slope.

b. What are the units of measure for the slope of the tangent line? Write a sentence of interpretation for the slope of the graph at point P.

c. Calculate and interpret the percentage rate of change at point P.

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Solutions For Problems in Chapter 2.2