Answer:

Step-by-step explanation:
fog(x)=f(g(x))
so it comes

<u>so C is the correct answer</u>
Answer:
There is no solution for this set of equations.
The sum of two numbers can not have two different solutions.
It can help because 9×4 =36, and 9×8=72. if you divide 72 by 2 you get 36 which is the answer to 9 ×4. basically because nine is the same in both problems you are multiplying by 4 (and you know 4 is half of 8) you can assume that multiplying the sum of 4 and 9 that you will get the sum of 8 and 9.