Question

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

Answer 1

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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 .
      
Hope my answer would be a great help for you.  

Answer 2

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