please do number 13. I am unsure if I did it correctly

RCx ) 10. lim 8(x) = 0 11. 12. x-0 f (x) lim [f (x) g (x ) ] = DNF lim[ f (x) . g(x) ] =0 lim g (x ) limf(x ) ling(x ) = 1. 1 = 1 limf ( x ) lim guy = 1.0=0 - =0 X - - 1 - ' X7-1- x - 2 - X - 2 - = 2 limf ( x ) lim f(x ) , ling (x ) - X 2 0 X- - 1 x5 - 1 + = 2. 1 = 2 lim f(x ) ling ( * ) x - 2+ X- 2+ = -10=0 13. 14. 15. lim[ 2f (x) +38(x)] = 4 lim f(x+ 2) = 4 * - 0 lim f(x2) = 1 fux) )+ 3(x30 X - - 1 limf(x ) lim 2 2 ( 2 ) + 3 (0 ) = 4 +. lim fix ) limflx) X -7 0 - X - 0 - x8 - 1 - 2 + 2 1. 1 =1 16. 17. 18. lim g (f (x) ) = 0 lim f (f (x) ) = 2 * -+ 2 X7 - 2 ) + 9 10 ) = 0 *- 2 * lim f (-f(x)) = 2 f ( lim f (x] ) = f ( 1 ) = 2 f ( - lim flax ) ) + f ( 1 ) = 2 19. 20. lim f ([g(x) ] + 1) =2 lim f(8(x) -2.5) = 2 1 f ( 149 () - 2.5) + f ( 1-2.5) f ( ling (0) 2+1 ) - f (0+ 1 ) f ( 1.5 ) = 2 f ( 1 ) = 2