For $\vec{q}=3 \vec{i}+\vec{j}-5 \vec{k}$ And $\vec{r}=3 \vec{i}-5 \vec{j}+\vec{k}$ , What Is $\vec{q} \cdot \vec{r}$

Short Answer

For $\vec{q}=3 \vec{i}+\vec{j}-5 \vec{k}$ and $\vec{r}=3 \vec{i}-5 \vec{j}+\vec{k}$ , what is $\vec{q} \cdot \vec{r}$ ?