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Precalculus 21 Online
OpenStudy (anonymous):

Find an equation for the nth term of the sequence. -2, -8, -32, -128, ...

OpenStudy (anonymous):

\[a_n=a_1 \times r ^{n-1}\]

OpenStudy (anonymous):

a(n)=nth term a(1)=first term of the sequence r=common ratio

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