To solve the given inequality just as if you were solving an equation, by applying the opposite operations to both sides of the inequality sign:
[tex]\begin{gathered} 3(x-9)<15 \\ \frac{3(x-9)}{3}<\frac{15}{3} \\ x-9<5 \\ x-9+9<5+9 \\ x<14 \end{gathered}[/tex]It means that the correct answer is D) x<14.
