Chapter 1.2, Problem 9E

Reminder Round all answers to two decimal places unless otherwise indicated.

Internet Access The following table gives the number $I=I\left(t\right)$ in millions, of adult Americans with Internet access in year $t$.

$t=Year$	$2000$	$2003$	$2009$
$I=MillionsofAmericans$	$113$	$166$	$196$

a. Find $I\left(2000\right)$ and explain what it means.

b. Find the average rate of change per year during the period from 2003 to 2009.

c. Estimate the value of $I\left(2007\right)$. Explain how you got your answer.