Find the Function Value $f ( x ) = - 1.7 e ^ { - 0.8 x }$

Multiple Choice

Find the function value.
-Let $f ( x ) = - 1.7 e ^ { - 0.8 x }$ . Find $f ( - 1.6 )$ , rounded to four decimal places.

A) $- 0.4727$
B) -6.1143
C) $0.4727$
D) $6.1143$