Use the table to find 

$\displaystyle \lim_{{{x}\rightarrow{4}}}{f{{\left({x}\right)}}}$

x	3	3.9	3.99	4	4.01	4.1	5
f(x)	8	9.8	9.99	9	10.02	10.1	13

$\displaystyle \lim_{{{x}\rightarrow{4}}}{f{{\left({x}\right)}}}$ =