Which functions have a horizontal asymptote? check all that apply

One integer is 8 times another. if the product is 72, then find the integers

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

Math it's appreciated. (picture provided)