Find the Vector Z,given $\mathbf { u } = ( - 1,3,4 ) , \mathbf { v } = ( 1 , - 4 , - 4 ) , \mathbf { w } = ( 20,0,20 )$

Multiple Choice

Find the vector z,given $\mathbf { u } = ( - 1,3,4 ) , \mathbf { v } = ( 1 , - 4 , - 4 ) , \mathbf { w } = ( 20,0,20 )$ . $\mathbf { z } = 7 \mathbf { u } + \mathbf { v } - \frac { 1 } { 20 } \mathbf { w }$

A) $\mathbf { z } = ( 17 , - 7,23 )$
B) $\mathbf { z } = ( 23 , - 7,17 )$
C) $\mathbf { z } = ( - 7,17,23 )$
D) $\mathbf { z } = ( 17,17,23 )$
E) $\mathbf { z } = ( - 7 , - 7,23 )$