Solve the problem.Find the first six terms of the sequence with first term -1 and nth term an = 3 - an-1.
A. -1, 2, -1, 2, -1, 2
B. -1, -4, 1, -4, -1, -4
C. -1, 2, 1, 2, 1, 2
D. -1, 4, -1, 4, -1, 4
Answer: D
Mathematics
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A. -19
B. 9
C. - 
D. -9
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Find equations for the tangent plane and the normal line to the surface with equation x² + 9y² + 9z² = 22 at the point P(2, 1, 1).
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Replace the question mark by <, >, or =, whichever is correct.
A. < B. > C. =
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