Identify the horizontal asymptote of each:

a)f(x)= 4/(x+4)

b)f(x)=x/(x+4)

c)f(x)=(x-1)/(-2x+4)

d)f(x)=(x³+3²-4x)/(-4x²-4x)

Identify the holes and vertical asymptotes of each:

a)f(x)=(x²-2x-3)/(x²-4)

b)f(x)=(x²-16)/(x²-x-6)