Answer
-2
Work Step by Step
Using the dot product, which tells us to multiply corresponding components and to then add, we find:
$$\begin{pmatrix}1&6&0\end{pmatrix}\begin{pmatrix}0&2&1\end{pmatrix}+\begin{pmatrix}0&2&1\end{pmatrix}\begin{pmatrix}4&-7&0\end{pmatrix} \\ 12+\begin{pmatrix}0&2&1\end{pmatrix}\begin{pmatrix}4&-7&0\end{pmatrix} \\ 12-14 \\ -2$$
