Use the Zero or Root Feature of a Graphing Utility $f ( x ) = 2 x ^ { 3 } + 8 x ^ { 2 } - 5 x - 7$

Multiple Choice

Use the zero or root feature of a graphing utility to approximate the zeros of
$f ( x ) = 2 x ^ { 3 } + 8 x ^ { 2 } - 5 x - 7$ accurate to the nearest thousandth.

A) $x = - 8.492 , - 0.695,1.186$
B) $x = - 3.575$
C) $x = - 3.910 , - 0.763,1.173$
D) $x = - 4.692$
E) $x = - 4.388 , - 0.720,1.108$