9. The following table shows annual sales data for Stuff Happens, Inc., over the ten-year 1998-2008 period:
Year Sales
($ Millions)
1998 $2.0
1999 2.2
2000 2.4
2001 2.6
2002 2.8
2003 3.0
2004 3.2
2005 3.5
2006 3.8
2007 4.1
2008 4.3
A. Calculate the 1998-2008 growth rate in sales using the constant rate of change model with annual compounding.
B. Calculate the 1998-2008 growth rate in sales using the linear model
C. Forecast sales for the years 2011 and 2013 under the two models. Comment.