Problem

Search Market Share Data from comScore shows that Google’s share of the U.S. search market...

Search Market Share Data from comScore shows that Google’s share of the U.S. search market has remained flat, as shown in the table below.

Date

April 2010

May 2010

June 2010

July 2010

August 2010

Sept 2010

Market Share (%)

66

66

66

66

66

66

Date

Oct 2010

Nov 2010

Dec 2010

Jan 2011

Feb 2011

March 2011

Market Share (%)

66

66

66

66

66

66

a. Write the linear model that gives Google’s market share as a function of the number of months after April 2010.


b. What is the rate of change of Google’s market share for this time period?

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