Question

The following table shows the length and width of two rectangles:


Length Width
Rectangle A 2x + 8 x - 1
Rectangle B 3x + 5 2x - 2


Which expression is the result of the perimeter of rectangle B minus the perimeter of rectangle A?
2x - 4

8x + 10

16x + 20

4x - 8

Answer 1

@Whitemonsterbunny17

Answer 2

please help!

Answer 3

perimeter = 2(W + L)
Let
A = (2x+8)+(x-1)
B = (3x+5)+(2x-2)

answer = 2B - 2A
2A= (2x+8)+(x-1)+(2x+8)+(x-1)
2A= (2x+8)+(2x+8)+(x-1)+(x-1)
2A= (4x+16)+(2x-2)
2A= (6x+14)

2B= (3x+5)+(2x-2)+(3x+5)+(2x-2)
2B= (6x+10)+(2x-2)+(2x-2)
2B= (10x+6)

2B-2A = (10x+6) - (6x+14)
2B-2A = ???