Solve the Problem $\mathbf { u } = \langle - 3,5 \rangle$

question 160

Multiple Choice

Solve the problem.
-If $\mathbf { u } = \langle - 3,5 \rangle$ and $\mathbf { v } = \langle 4,9 \rangle$ , evaluate $( 2 \mathbf { u } ) \cdot \mathbf { v }$ .

• A) 102
• B) 72
• C) 62
• D) 66