1. The problem statement, all variables and given/known data Find the Vertical and horizontal asymptotes of this function f(x)=(4x^2+25)/(x^2+9) 3. The attempt at a solution I think that the horizontal asym. is y=4 But the Vertical if (x^2+9)=0 then x is an imaginary number. So is the asym. (3i) or does the asym not exist?