Given the quadratic function;
[tex]f(x)=3x^2+6x-2[/tex]
The graph of the function is;
(a) Domain of the function: The domain of a function is the set of values for which the function is real and defined. We have;
[tex]\begin{gathered} -\infty
(b) Range of the function: The range of a function is the set of values of the dependent variable for which the function is defined. From the graph above, we have;[tex]\begin{gathered} f(x)\geqslant-5 \\ \lbrack-5,\infty) \end{gathered}[/tex]
