Question: State the domain of the following:

a) \[f(x)=\sqrt{x+4}\]

b) \[g(x)=\frac{2x+1}{x-3}\]

c) \[h(x)=3{{x}^{2}}+5x-3\]

d) \[l(x)=2x+3\]

e) \[m(x)=\frac{3}{{{x}^{2}}+7}\]