4) Determine the horizontal asymptote (if it exists) ofeach of the following functions. Ifa horizontal asymptote does not exist, indicate that with no HA. a) f(x) b) g(x) c) h(r)- 3x2-5 5. f(r)-2x +6 is a one-to-one function. Find its inverse using the 4-step process discussed in class 6. Given that for)- 2 x +land g() 5x, find the compositions: (fog)(x)