Find the indicated term of a geometric sequence from the given information.
-$a _ { n } = - 4 ( 2 ) ^ { n - 1 }$, find $a _ { 4 }$
A) $- 64$
B) 2
C) 4
D) $- 32$

Name: Find the indicated term of a geometric sequence from the given information. -$a _ { n } = - 4 ( 2 ) ^ { n - 1 }$, find $a _ { 4 }$ A) $- 64$ B) 2 C) 4 D) $- 32$
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Question

Quizplus · Accepted Answer

To find $a_4$, substitute $n = 4$ into the given formula: $a_4 = -4(2)^{4-1} = -4(2)^3 = -4(8) = -32$.

Find the Indicated Term of a Geometric Sequence from the Given