Given Vectors $\mathbf { u } = \langle - 1,3 \rangle$

Multiple Choice

Given vectors $\mathbf { u } = \langle - 1,3 \rangle$ and $\mathbf { v } = \langle 1,4 \rangle$ determine the quantity indicated below. $- 2 \mathbf { u }{ \cdot}- 4 \mathbf { v }$

A) -48
B) -56
C) -46
D) 88
E) 20