Amazon.com celebrated its 13th anniversary in July 2007. Its growth can be seen by examining its increasing sales volume (in $billions) as reported by Hoovers Inc.

Sales 0.0005 0.0157 0.1477 0.6098 1.6398 Year 1995 1996 1997 1998 1999 Sales 2.7619 3.1229 3.9329 5.2637 6.9211 Year 2000 2001 2002 2003 2004 Sales 8.490 10.711 14.835 Year 2005 2006 2007

a. Construct a line plot for Amazon’s sales.

b. Describe the type of relationship that exists between the years in business and Amazon’s sales volume.

c. In which year does it appear that Amazon had the sharpest increase in sales?