Solve for a3 a_3=2(4)^(3-1)

$a_{3} = 2 {(4)}^{3 - 1}$

Subtract $1$ from $3$ .

$a_{3} = 2 \cdot 4^{2}$

Raise $4$ to the power of $2$ .

$a_{3} = 2 \cdot 16$

Multiply $2$ by $16$ .

$a_{3} = 32$

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