Advanced Punctuation: Colons, Semicolons, and Dashes
Q: Which sentence demonstrates correct use of punctuation with transitional expressions?
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Factor: \(x^2 - x - 6 = (x - 3)(x + 2) \leq 0\). Critical points: \(x = -2\) and \(x = 3\). Test intervals: For \(x < -2\), positive; for \(-2 < x < 3\), negative; for \(x > 3\), positive. Since \(\leq 0\), include endpoints. Solution: \(-2 \leq x \leq 3\).
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