Question

-12x + 9 ≤ 21
option 1
option 2

Explanation:

Step1: Subtract 9 from both sides

$-12x + 9 - 9 \leq 21 - 9$
$-12x \leq 12$

Step2: Divide by -12 (reverse inequality)

$\frac{-12x}{-12} \geq \frac{12}{-12}$
$x \geq -1$

Step3: Match with number line

$x \geq -1$ means a closed dot at -1 and blue line to the right.

Answer:

Option 2 (The graph with closed dot at -1 and blue line extending right)