The problem requires solving the inequality $f + 4 \le 13$ and graphing the solution on a number line.

1. Problem Description

The problem requires solving the inequality $f + 4 \le 13$ and graphing the solution on a number line.

2. Solution Steps

First, we need to solve the inequality $f + 4 \le 13$ for $f$.

Subtract 4 from both sides of the inequality:

$f + 4 - 4 \le 13 - 4$

$f \le 9$

So the solution is $f \le 9$.

This means $f$ can be any value less than or equal to

9. To graph this on the number line, we need a closed circle (or filled-in circle) at 9, and an arrow extending to the left (towards negative infinity).

3. Final Answer

$f \le 9$