Answers:
x = 3
x = 5
Explanation:
In the function, the first set represents the x and the second set represents f(x), so to find for which values of x does f(x) = 4, we need to identify the beginning of the arrows that end in the number 4.
Therefore, these numbers are 3 and 5. It means that x = 3 and x = 5 make f(x) equal to 4.
So, the answers are x = 3 and x = 5.
