First simplify the equation of parabola

in the following way:

.
You can see that if x=1 or x=2, then y=0. Two points of intersection with x-axis are (1,0) and (2,0).
99.96 Or 9.960 If you prefer
36/4= 9, 8/4= 2 a is correct
36/2=18, 8/2= 4 b is correct however wrong because it is the simplest distribution
36/8= 4.5, 8/8= 1 c is incorrect
36/11= 3.27, 8/11= .73 d is incorrect.
Answer is 4x(9+2)