Question

1. $x + 1 + 4 \leq 9 = x \leq 4$

Explanation:

Step1: Simplify left side terms

$x + (1+4) \leq 9$
$x + 5 \leq 9$

Step2: Isolate $x$ via subtraction

$x + 5 - 5 \leq 9 - 5$
$x \leq 4$

Step3: Verify number line representation

A closed dot at 4 (since $x$ can equal 4) and an arrow pointing left (for all values less than 4) matches the solution $x \leq 4$.

Answer:

The solved inequality is $\boldsymbol{x \leq 4}$, and the number line graph (closed dot at 4, arrow left) correctly represents this solution.