Find the vertical asymptotes, if any, of the graph of the rational function.g(x) = x/x^2-36

i got x=6, x=-6

h(x) = x+4/x(x-2)

i got x=2

Find the slant asymptote, if any, of the graph of the rational function.f(x) = x^2+16/x

i got y=x

h(x) = x^3+6/x^2-25

(this one I dont understand)

g(x) = x^3+7/x^2+8

(this one I dont understand)

Graph the function.f(x) = x^3+4/x^2+5x

(this one I dont understand)