The annual revenue of Amazon.com rose from approximately $10.7 billion in 2006 to $34.2 billion in 2010.†
(a) Use this information to find both a linear model and an exponential model for Amazon.com's annual revenue I (in billions of dollars) as a function of time t in years since 2000. HINT [See Example 2.] (Round all coefficients to three significant digits.)
linear model I(t) =
exponential model I(t) =

Which of these models would you judge to be more appropriate to the data shown below?
t (Year since 2000) 6 7 8 9 10
I ($ billions) 10.7 14.8 19.2 24.5 34.

Question

The annual revenue of Amazon.com rose from approximately $10.7 billion in 2006 to $34.2 billion in 2010.†
(a) Use this information to find both a linear model and an exponential model for Amazon.com's annual revenue I (in billions of dollars) as a function of time t in years since 2000. HINT [See Example 2.] (Round all coefficients to three significant digits.) 
linear model	    I(t) =   
exponential model	    I(t) =   
 

Which of these models would you judge to be more appropriate to the data shown below?
t (Year since 2000)	 6	 7	 8	 9	 10
I ($ billions)	 10.7	 14.8	 19.2	 24.5	 34.