A)116t
B)58t
C)104t
D)32t
E)174t

Multiple Choice

$\text { Find } \frac { d w } { d t } \text { using the appropriate Chain Rule for } w = x ^ { 2 } + y ^ { 2 } \text { where } x = 7 t \text { and } y = 3 t \text {. }$

A) 116t
B) 58t
C) 104t
D) 32t
E) 174t