Please give explanation, thank you!

C) -1

Step-by-step explanation:

For this problem, we simply look at the value f(3) on the graph since it's equivalent to f(c). Once we find the value of f(3), 2, then we find on the graph where 2 is again. We see that at the point (-1,2) this is true. So we can say that C is equal to -1 to make the equation f(c) = f(3).

Cheers.

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

i use my brain for prombles like this maybe you could try it

step-by-step explanation: