Respuesta :

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For A) you have to divide by 3. So, 15, 5, 5/3, 5/9, 5/27, 5/81, 5/243, 5/729, 5/2187.

For B) you need to multiply by 3. So, 7, 4, 1, -2, -5 -8, -11, -14, -17.
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