X Find the Range of the Quadratic Function $$f ( x ) = 4 x ^ { 2 } + 2 x - 6$$

Multiple Choice

x Find the range of the quadratic function.
- $$f ( x ) = 4 x ^ { 2 } + 2 x - 6$$

A) $\left[ - \frac { 25 } { 4 } , \infty \right)$
B) $\left( - \infty , - \frac { 25 } { 4 } \right]$
C) $\left[ - \frac { 1 } { 4 } , \infty \right)$
D) $\left( - \infty , - \frac { 1 } { 4 } \right]$