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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