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Given a geometric sequence in the table below, create the explicit formula and list any restrictions to the domain.



nan

1−4

220

3−100

an = −5(−4)n − 1 where n ≥ 1


an = −4(−5)n − 1 where n ≥ 1


an = −4(5)n − 1 where n ≥ −4


an = 5(−4)n − 1 where n ≥ −4

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The best and most correct answer among the choices provided by the question is 
   an = −4(−5)n − 1 where n ≥ 1 .
      
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Hello there.

Given a geometric sequence in the table below, create the explicit formula and list any restrictions to the domain.
nan
1−4
220
3−100

an = −4(−5)n − 1 where n ≥ 1