Determine Where the Function Is Increasing and Where It Is $$f ( x ) = - 4 x ^ { 2 } - 2 x - 11$$

Determine where the function is increasing and where it is decreasing.
- $$f ( x ) = - 4 x ^ { 2 } - 2 x - 11$$

A) increasing on $\left( - \infty , - \frac { 1 } { 4 } \right)$
decreasing on $\left( - \frac { 1 } { 4 } , \infty \right)$
B) increasing on $\left( - \infty , \frac { 1 } { 4 } \right)$
decreasing on $\left( \frac { 1 } { 4 } , \infty \right)$

C) decreasing on $\left( - \infty , - \frac { 1 } { 4 } \right)$
increasing on $\left( - \frac { 1 } { 4 } , \infty \right)$

D) increasing on $\left( - \infty , - \frac { 43 } { 4 } \right)$
decreasing on $\left( - \frac { 43 } { 4 } , \infty \right)$

Correct Answer:

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