The shaded portion is 7.3
75 degrees warmer.
If you subtract -39 by -114, you get 75 which is the distance between the two temperatures
I believe the answer is 19 cm, because you compare 8cm to the other side, it's basically the same. Multiply 2 x 8 and you get 19 cm.
The answer is B. The leading coefficient is always the variable with the highest degree. In this case, it's 5.
The midpoint is (0,2)
Hope this helps! (: