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?

Answer 1

rectangle of perimeter A=2(2x+8+x-1)
=2(3x+7)
=6x+14.........................equation 1
rectangle of perimeter B=2(3x+5+2x-2)
=2(5x+3)
=10x+6.........................equation 2
now,eq 2-eq 1
=10x+6-(6x+14)
=10x+6-6x-14
=4x-8
=4(x-2)