Answer:
D. m = 15
Step-by-step explanation:
[tex]3m\leq36\qquad\text{divide both sides by 3}\\\\\dfrac{3m}{3}\leq\dfrac{36}{3}\\\\m\leq12\\\\a.\ m=4\leq12\to\boxed{SOLUTION}\\\\b.\ m=9\leq12\to\boxed{SOLUTION}\\\\c.\ m=12\leq12\to\boxed{SOLUTION}\\\\d.\ m=15>12\to\boxed{NOT\ A\ SOLUTION}[/tex]
