According to a study, the probability that a smoker will quit smoking increases with the smoker's educational level. The probability (expressed as a percent) that a smoker with x years of education will quit is approximated by the equation f(x)=0.831x² −18.1x+137.3 (for 10≤x≤16 ).

Find f(12). (Round your answer to three decimal places.)
f(12)=