Answer:
the perimeter is 129 inches
Explanation:
4x² + 8x + 3x² - 5x + 20 + 7x + 30 + 31 =
= 7x² + 10x + 81
x = 2
= 7(2²) + 10(2) + 81
= 7(4) + 20 + 81
= 28 + 101
= 129
Answer: 129 in.
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