Answer:
- A. | x+1 | > 6
- none of the above
Explanation:
4. The graph is showing you x < -7 ∪ 5 < x. The difference between the end points is 12, suggesting that the inequality will be of the form | f(x) | > 6. We want the expression for f(x) to be zero at the midpoint of the excluded interval, which is (-7+5)/2 = -1. The inequality that matches this requirement is ...
| x+1 | > 6 . . . . . . . matches choice A
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7. The graph shows a domain of x-values less than 3, so the domain in interval notation is (-∞, 3).
The graph shows the range of y-values from -∞ to -1, including -1. In interval notation, the range is (-∞, -1].
None of the answer choices match ...
Domain (-∞, 3), range (-∞, -1].
(Your computer might say C is correct, but it is not. Talk to your teacher about this question.)