The following time series data represent the yearly amounts
The following time series data represent the yearly amounts spent on advertising (in millions of dollars) by a large toy company:
| 9.1, | 11.6, | 12.1, | 12.0, | 14.0, | 14.1, | 14.6, | 14.1, | 15.7, | 15.2 |
Solution
T(t) = 9.85+0.62t
For 2015 as from the above chart, t = 23
T(23) = 9.85+0.62(23) = $24.11 million
| year | t | T |
| 1993 | 1 | 10.47 |
| 1994 | 2 | 11.09 |
| 1995 | 3 | 11.71 |
| 1996 | 4 | 12.33 |
| 1997 | 5 | 12.95 |
| 1998 | 6 | 13.57 |
| 1999 | 7 | 14.19 |
| 2000 | 8 | 14.81 |
| 2001 | 9 | 15.43 |
| 2002 | 10 | 16.05 |
| 2003 | 11 | 16.67 |
| 2004 | 12 | 17.29 |
| 2005 | 13 | 17.91 |
| 2006 | 14 | 18.53 |
| 2007 | 15 | 19.15 |
| 2008 | 16 | 19.77 |
| 2009 | 17 | 20.39 |
| 2010 | 18 | 21.01 |
| 2011 | 19 | 21.63 |
| 2012 | 20 | 22.25 |
| 2013 | 21 | 22.87 |
| 2014 | 22 | 23.49 |
| 2015 | 23 | 24.11 |
