Express the following in interval notation.
A. (3, 7)
B. [3, 7]
C. (-?, 3] ? [7, ?)
D. (-?, 3) ? (7, ?)
Answer: C
Mathematics
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A. an = (-1)n B. an = -1n C. an = (-1)n-1 D. an = -1n-1
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Write a system of inequalities whose solution set is the region shown.
A. y ? 0 x2 + y2 ? 16 B. y ? 0 x2 + y2 ? 16 C. y ? 0 x2 + y2 ? 16 D. y ? 0 x2 + y2 ? 16
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Solve the problem.Let f(x) = cos x, g(x) = x - ?/6, and h(x) = 3x. Find g(?).
A. 3? B. 5?/6 C. 7?/6 D. -1
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Multiply.-8(-9)
A. -64 B. -72 C. 62 D. 72
Mathematics