Problem

Business Email The table shows the number of people in Europe who use email as a par...

Business Email The table shows the number of people in Europe who use email as a part of their jobs.

a. Find a model for the number of European business email users, given the number of years since 2005.

b. What is the constant rate of change of the number of European business email users?

c. Use the model to estimate the number of European business email users in 2013. Is this estimate found by interpolation or extrapolation?

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Solutions For Problems in Chapter 1.4