To find $f(3)$ from the given graph, we need to look at the y-coordinate of the point where the graph crosses or touches $x = 3$.

From the image, at $x = 3$, the graph passes through the point $(3, 6)$. This means $f(3) = 6$.

Thus, the correct answer is: $f(3) = 6$

Would you like more details or have any other questions?

Here are 5 related questions to further explore the concept:

1. How can we determine if a function is continuous at a certain point from its graph?
2. What does it mean if there is a hole (open circle) in the graph at a point?
3. How do we calculate the slope of the graph at any point?
4. What happens to the value of a function if there's a vertical asymptote at a certain point?
5. How can you tell if a function has a local maximum or minimum using a graph?

Tip: Always check for open circles in a graph—they indicate points where the function is not defined, even if the graph is close to that point.