Write the Expression for the General (Or Nth)termrm $\mathbf { a } _ { \mathbf { n } } ,$

question 66

Multiple Choice

Write the expression for the general (or nth) termrm, $\mathbf { a } _ { \mathbf { n } } ,$ , of the geometric sequence.
-8, -16, 32, -64, 128,. . .

• A) \(a _ { n } = 8 ( - 2 ) ^ { n - 1 }\)
• B) \(a _ { n } = 8 ( - 2 ) n\)
• C) \(a _ { n } = a _ { 1 } - 2 ^ { n }\)
• D) \(a _ { n } = 8 ( - 2 ) ^ { n }\)

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