I think you are supposed to find the perimeter of it so you add all sides together to get your answer
The gray line is longer than the white line.
The black line is longer than the gray line.
White -------------------------
Gray ------------------------------------------
Black --------------------------------------------------------
Answer: The black line is longer than the white line.
You need to look at the x values when you calculate that.
There is a line which goes from -2 to 0. Another line at 0 to 4 and the last line is 7 to infinity.
You can combine the first two and get B) (-2, 4] and [7, infinity)
You need to factor the numerator and denominator...
(2x^2+4x-2x-4)/(2x^2-2x-2x+2)
(2x(x+2)-2(x+2))/(2x(x-1)-2(x-1))
((2x-2)(x+2))/((2x-2)(x-1)) so the (2x-2)s cancel out leaving
(x+2)/(x-1)
