SOLUTION: A rectangle has sides of 3x – 4 and 7x + 10. Find the expression that represents its perimeter.

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Question 40058: A rectangle has sides of 3x – 4 and 7x + 10. Find the expression that represents its perimeter.

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Perimeter = 2 x length + 2 x width so we can write
P = 2L + 2W
P = 2(3x - 4) + 2(7x + 10)
P = 6x - 8 + 14x + 20
P = 20x + 12