## Precalculus (6th Edition) Blitzer

$14$
Recall that if $f$ is a polynomial, then $\lim_\limits{x\to a}f(x)=f(a)$. Thus, we can find the limit by plugging $a$ into the function and simplifying: $$\lim_\limits{x\to6}(3x-4)=3(6)-4=18-4=14$$