Look at the given rectangle. (attached in next message) Write a polynomial in simplest form for the perimeter of the rectangle.
I've narrowed it down to either C or D.
C - 14x + 8
D - 2(5x + 5) + 2(2x - 1)
Please explain how you got your answer so I can do it on my own in the future.
Thanks.

Question

Look at the given rectangle.  (attached in next message)  Write a polynomial in simplest form for the perimeter of the rectangle.
I've narrowed it down to either C or D.
C - 14x + 8
D - 2(5x + 5) + 2(2x - 1)
Please explain how you got your answer so I can do it on my own in the future.
Thanks.

shiree19 · Answer

attachment

shiree19 · Answer

please help @texaschic101  @IMStuck  @hippo4

shiree19 · Answer

@scburchell11

shiree19 · Answer

I think the answer is D. Because (5x + 5) + (2x - 1) + (5x + 5) + (2x - 1) = A then simplify which = D
My Work:
5x + 5 = 10x; 5 + 5 = 10; 2x + 2x = 4x; -1 + (-1) = -2
= 10x + 10 + 4x + -2 = A
Now simplify:
10x + 4x = 14x; 10 - 2 = 8
= 14x + 8 = D