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The sequence below shows the number of households that have purchased a subscription to a magazine each month 3,9,27,81, 243. What formula to determine the number of households

Respuesta :

altavistard

Answer:

a(n) = 3*3^(n-1).

Step-by-step explanation:

The first term of this sequence is 3.  The next one is 3 times 3, or 9; the next is 3 times 9, or 27; and so on.  So the common ratio is 3.

The formula for the nth term is thus a(n) = 3*3^(n-1).

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