Evaluate the Expression $$r = \langle 9 , - 9 , - 4 \rangle , \mathbf { v } = \langle 6 , - 9 , - 6 \rangle , \mathbf { w } = \langle 6 , - 1 , - 3 \rangle$$

question 113

Multiple Choice

Evaluate the expression.
- $$r = \langle 9 , - 9 , - 4 \rangle , \mathbf { v } = \langle 6 , - 9 , - 6 \rangle , \mathbf { w } = \langle 6 , - 1 , - 3 \rangle$$
$( \mathbf { r } + \mathbf { v } ) \cdot \mathbf { w }$

• A) 138
• B) \(\langle - 90 , - 18 , - 30 \rangle\)
• C) \(\langle - 54 , - 81 , - 24 \rangle\)
• D) \(- 138\)

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