Please help (all of these are part of the same question)

B (xx ) 11. 12. 10. lim 8(x) x-of(x) lim [f(x) . 8(x)] lim [f (x) . g(x) ] 13. 14. 15. lim [2 f (x) +38(x)] lim f (x+ 2) lim f(x2 ) x -> - 1 16. 17. 18. lim g (f (x) ) x - - 2 lim f (f(x)) * - 2 - lim f (-f(x)) x -> 2+ 19. lim f (8(x) -2.5) 20. lim f ([g(x)] +1)