Find the limit of (4kx + 9)/(45x + 3) as x->inf, when K=5, K<5, K>5. Answer: I divided each term by the highest power of 4, and was able to come up with 0 (K<5), 1 (K=5), inf (K>5). I'm pretty sure these are correct. Was this the right method? Am I good to assume that dividing by the highest power of x is similar in some ways to dividing by the highest power of some common base, which is what I did here? Let me know if I can explain myself better.