Answer
$9$
Work Step by Step
We know that for a matrix
\[
\left[\begin{array}{rrr}
a & b & c \\
d &e & f \\
g &h & i \\
\end{array} \right]
\]
the determinant, $D=a(ei-fh)-b(di-fg)+c(dh-eg).$
Hence here $D=1(1\cdot-1-4\cdot3)-0(-3\cdot-1-4\cdot2)-2(-3\cdot3-1\cdot2)=1(-13)-0(-5)-2(-11)=9.$
