X

2003	3.4225	3.0121
2004	3.7575	3.4315
2005	3.9332	3.6257
2006	4.7512	3.8023
2007	4.9768	4.5400
2008	5.5485	4.8231
2009	5.7225	5.0321
2010	6.1668	5.8500
2011	5.9600	5.9523
2012	6.0927	5.6871
2013	5.6223	6.3110
2014	5.5012	6.6321
2015	4.8853	7.7423

1. Using the data set in the table, model Sales Revenues, R(x)as a quadratic function of year, with x=0 representing 2000. That is, plot this set of data and find the curve of best fit. (Use Excel)(Hint: replace 2003 with x=3, 2004 with x=4, and so forth before plotting the graph and finding the best fit curve.
2. Use the function R(x) you found in part a to determine the year (round to the nearest integer when necessary) in which the maximum revenue occurs, and then compare this value with the real data (maximum revenue in the table).
3. Write a sentence to describe how well the function fits the data.
4. Using the data set in the table, model Cost and Expenses, C(x),as a quadratic function of year, with x=0 representing 2000. That is, plot this set of data and find the curve of best fit.(Use Excel)(Hint: replace 2003 with x=3, 2004 with x=4, and so on before plotting the graph and finding the best fit curve.)