Answer:
C) 4
D) 2
Step-by-step explanation:
f(x) = 0 means at what value of x does y = 0 on the curve?
i.e. what are the x-coordinates of the points at which the curve intersects the x-axis?
From inspection of the graph, we can see that the curve intersects the x-axis at (-1, 0), (2, 0) and (4, 0)
Therefore, the values of x at these points are -1, 2, and 4.
So the solution to the question is C and D.
