Differentiate the Given Function $$f ( x ) = 25 - 6 e ^ { - 0.07 x }$$

Multiple Choice

Differentiate the given function. $$f ( x ) = 25 - 6 e ^ { - 0.07 x }$$

A) $0.42 e ^ { - 0.07 x }$
B) $- 6 x e ^ { - 0.07 x }$
C) $- 0.42 e ^ { - 0.07 x }$
D) $6 x e ^ { - 0.07 x }$