In Question, use linear regression to find the requested linear model.
The table shows the total amount of charitable giving (in billions of dollars) in the United States in recent years.†
Year | Charitable Giving |
1994 | 119.2 |
1996 | 138.6 |
1998 | 177.4 |
2000 | 227.7 |
2001 | 229.0 |
2002 | 234.1 |
2003 | 240.7 |
(a) Find a linear model for the data, with x = 0 corresponding to 1990.
(b) Estimate the amount of charitable giving in 1999 and 2006.
(c) According to the model, in what year will charitable giving reach $372 billion?
†Statistical Abstract of the United States: 2006.
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