Evaluate $f ( - 2 )$ $f ( - 1 )$

Essay

Evaluate $f ( - 2 )$ , $f ( - 1 )$ , $f ( 0 )$ , $f ( 1 )$ , and $f ( 5 )$ for the piecewise-defined function. $f ( x ) = \left\{ \begin{array} { l l } 3 x ^ { 2 } & \text { if } x < 0 \\2 x + 1 & \text { if } x \geq 0\end{array} \right.$