Sales The table shows the sales (in billions of dollars) for Wal-Mart stores from 2006
Chapter 1, Problem 20(choose chapter or problem)
Sales 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.
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