Consider the following rational functions:

r(x)=2x-1/x^2-x-2
s(x)=x^3+27/x^2+4
t(x)=x^3-9x/x+2
u(x)=x^2+x-6/x^2-25

a)which of these rational functions has a horizonatal asymptote?b)which of these functions has a slant asymptote?
c)which has no vertical asymptote?
d)graph y=u(x) showing clearly any asymptotes and x- and y-intercepts the function may have.
e)use long division to find a polynomial P that has the same end behavior as t. Graph both P and t on the same screen to verify that they have same end behavior.