The length of the side of square is 4x + 5, then the perimeter of the square is given by

4x + 5

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16x + 20

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8x + 5

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4x + 9

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Solution

The correct option is B 16x + 20
The length of the side of square is 4x + 5, then perimeter = 4 (side)
$\Rightarrow$ 4(4x + 5) = 16x + 20

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