Solve.t2 - 2t - 15 ? 0
A. (-?, -3] ? [5, ?), or {t
t ? -3 or t ? 5}
B. [5, ?), or {t
t ? 5}
C. (-?, -3], or {t
t ? -3}
D. [-3, 5], or {t
-3 ? t ? 5}
Answer: D
Mathematics
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