$\| v \| = 3$

$\| w \| = 1$

The angle between $v$ and $w$ is 0.7 radians.

Given this information, calculate the following:

(a) $v \cdotp w$ =

(b) $\| 4 v + 4 w \| =$

(c) $\| 3 v - 4 w \| =$