Matrices & Systems · Medium problem

Let $A = \begin{pmatrix}-3 & 2 & 1 \\ 2 & 4 & 0\end{pmatrix}$ and $B = \begin{pmatrix}-3 & -3 \\ 2 & 3 \\ 4 & -1\end{pmatrix}$. Find the entry in row $1$, column $2$ of $AB$.