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

To do this, substitute \( x = 3 \) into the function:

\[
f(3) = 3(3) + 5
\]

\[
f(3) = 9 + 5
\]

\[
f(3) = 14
\]

Thus, \( f(3) = 14 \).

Would you like further details or have any questions?

Here are 5 related questions:
1. What is \( f(-2) \) for the same function?
2. How do you find the inverse of \( f(x) = 3x + 5 \)?
3. If \( f(x) = 3x + 5 \), what is \( f(a) \) in terms of \( a \)?
4. How do you graph the function \( f(x) = 3x + 5 \)?
5. What is the slope and y-intercept of \( f(x) = 3x + 5 \)?

**Tip:** The slope-intercept form \( y = mx + b \) is useful for quickly identifying the slope and y-intercept of a linear function.

Learn how to find f(3) for the linear function f(x) = 3x + 5. This problem focuses on substitution and basic algebra concepts, suitable for students in Grades 6-8.

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