Box Office Receipts U.S. movie box office receipts, in billions of dollars, are shown in 5-year increments from 1989 to 2009. (Source: www.boxofficemojo.com)
| Year | Receipts |
| 1989 | 5.033 |
| 1994 | 5.396 |
| 1999 | 7.413 |
| 2,004 | 9.381 |
| 2,009 | 10.595 |
These receipts R are reasonably approximated by the linear model
R = 0.3022x + 4.542,
where x = 0 corresponds to 1989, x = 5 corresponds to 1994, and so on. Using the model, calculate the year in which the receipts first exceed each amount.
(a) $6.5 billion (b) $10 billion
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