Given the function $f(x) = 3x + 5$, you need to find $f(3)$.

1. Substitute $x = 3$ into the function: $f(3) = 3(3) + 5$

2. Simplify: $f(3) = 9 + 5 = 14$

Thus, $f(3) = 14$.

Would you like any further details on this solution?

Here are five related questions for further exploration:

1. What is $f(0)$ for the function $f(x) = 3x + 5$?
2. How do you find the inverse of the function $f(x) = 3x + 5$?
3. What is the slope of the function $f(x) = 3x + 5$?
4. How does the function change if the constant 5 is replaced with another constant?
5. Can you find $f(a + b)$ for arbitrary values $a$ and $b$?

Tip: Always check the value of the function by substituting directly to ensure accuracy.