I believe it is D.
On the very bottom if you just go straight across then it would be 7+3+8 which is 18.
If you know the radius of the circle do radius times 2.
You use FOIL (first, outer, inner, last) to check your answer. Eg: (x-4)(x+3)then distribute by using FOIL to get 2 2
x +3x -4x -12 then simplify to get x -x -12
Answer:

Step-by-step explanation:
For every
of television time of commercials = 
% of commercials 
Now when time of television
