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Type: Multiple-Choice
Category: Functions and Relations
Level: Grade 11
Standards: HSF-BF.A.2
Tags: HSF-BF.A.2
Author: HTPhysics
Created: 2 months ago

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Grade 11 Functions and Relations CCSS: HSF-BF.A.2

Given the geometric sequence: 81, 27, 9, 3, … what is the explicit formula?

$a_n = 81 · (1/3)^(n-1$
$a_n = 27 · (1/3)^(n-1$
$a_n = 81 · 3^(n-1$
$a_n = 3 · 81^(n-1$