Hello I would like help from #18 through #21 Please thank you.

18. Identify the limits from the graph of the function given above. Him f(x) lim, f(x) lim f(x) 19. Identify the limits from the graph of the function given above. lim f(x) x-2 lim f(x) x-2+ lim f(x) x-2 20. Identify where the function is continuous. f (x) = (x + 3) (x + 4) (x + 4) (x - 8) 21. Identify where the function is discontinuous. (not continuous) f(x) = Vx -2 + 5