Year 2006 2007 2008 2009 Sales 348.7 378.8 405.6 408.2 Year 2010 2011 2012 2013 Sales 421.8 447.0 469.2 476.2

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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The table shows the sales (in billions of dollars) for Wal-Mart stores from 2006 through 2013. (Source: Wal-Mart Stores, Inc.)
(a) Set up a system of equations to fit the data for the years 2006, 2007, 2008, 2009, and 2010 to a quartic model.
(b) Solve the system. Does the solution produce a reasonable model for determining sales after 2010? Explain.

Year
2006
2007
2008
2009
Sales 348.7 378.8 405.6 408.2
Year
2010
2011
2012
2013
Sales
421.8
447.0 469.2 476.2
Transcribed Image Text:Year 2006 2007 2008 2009 Sales 348.7 378.8 405.6 408.2 Year 2010 2011 2012 2013 Sales 421.8 447.0 469.2 476.2
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