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Find the First Four Terms of the Sequence An =

Question 86

Multiple Choice

Find the first four terms of the sequence an = (-1) n+2(7n) . Determine whether the sequence is arithmetic, and if so, find the common difference d.


A) a1 = -7, a2 = 14, a3 = -21, a4 = 28; not arithmetic
B) a1 = -7, a2 = 14, a3 = -21, a4 = 28; d = 7
C) a1 = -7, a2 = 14, a3 = -21, a4 = 28; d = -7
D) a1 = 7, a2 = -14, a3 = 21, a4 = -28; not arithmetic

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