For #$30-34,$ find the absolute maximum and$/$or minimum values of the function on the interval shown.

$30.f(x)=\frac{2}{3}{x}^3-x^2-4x+5$;$,[0,3]$

$31.g(x)=2x-5$;$,(-,)$

$32.h(x)=-x^2+6x-4$;$,(-,)$

$33.f(x)=x+\frac{100}{x}$;$(0,)$

$34.f(x)=2x^3+4x^2+2x-5$;$,[-2,1]$