Use a Graphing Calculator to Approximate the Real Zeros $$f ( x ) = 4 x ^ { 3 } + x ^ { 2 } - 20 x - 5$$

Multiple Choice

Use a graphing calculator to approximate the real zeros. Give each zero as a decimal to the nearest tenth.
- $$f ( x ) = 4 x ^ { 3 } + x ^ { 2 } - 20 x - 5$$

A) $- 0.3,2.2 , - 2.2$
B) $0.3,2.2 , - 2.2$
C) $- 4,2.3 , - 2.3$
D) $4,5 , - 5$