Concept explainers
Modeling Data
The table shows the numbers of cell phone subscribers (in millions) in the United States for selected years. (Source: CTIA-The Wireless Association)
Year |
2000 |
2002 |
2004 |
2006 |
Number |
109 |
141 |
182 |
233 |
Year |
2008 |
2010 |
2012 |
2014 |
Number |
270 |
296 |
326 |
355 |
(a) Use the regression capabilities of a graphing utility to find a mathematical model of the form
(b) Use a graphing utility to plot the data and graph the model. Compare the data with the model.
(c) Use the model to predict the number of cell phone subscribers in the United States in the year 2024.
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Calculus of a Single Variable
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