perimeter is 2 times length + 2 times width =
2(3x**2 + 7x + 9) + 2(3x - 6)
6x**2 + 14x + 18 + 6x - 12
6x**2 + 20x + 6
Carter B.
asked 03/23/21The length of a rectangle in terms of x is 3x2+7x+9 and the width is 3x+6
perimeter is 2 times length + 2 times width =
2(3x**2 + 7x + 9) + 2(3x - 6)
6x**2 + 14x + 18 + 6x - 12
6x**2 + 20x + 6
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