The approximate sales of Lexus automobiles are shown in the table.†
Year | Vehicle Sold |
2000 | 207,000 |
2001 | 229,000 |
2002 | 236,000 |
2003 | 264,000 |
2004 | 289,000 |
2005 | 300,000 |
(a) Let x = 0 correspond to 2000 and use linear regression to find a model for this data (in which the number of vehicles sold is in thousands). Round the coefficients to four decimal places.
(b) Use your model to estimate sales in 2007.
(c) According to your model, at what rate are sales increasing?
†Based on data from Autodata Corporation.
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