Gamalielyusongo Gamalielyusongo Math Answered Exercise 1: Know Me BetterDirections: Identify which of the following are rational functions.5. f(x)= (4 + x)/(x+3)6. f(x)= (x2 - 4x - 5)/(x - 1)7. g(x)=(Vx+3)/(x2 - 1)8. i(x)= 5 + x - 4x27x2 + 2x + 1