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Determine Whether the Sequence Is Arithmetic $\alpha _ { n } = - 2 - 7 n$

Question 6

Multiple Choice

Determine whether the sequence is arithmetic. If so, find the common difference. (Assume that n begins with 1.) $\alpha _ { n } = - 2 - 7 n$

A) 7
B) 2
C) -2
D) -7
E) not arithmetic

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