The formulay=2.88x+10

models the percent of U.S. adults who are considered obese by federal guidelines,wherex

is the number of years after 1987, andy

is the percent of obese adults.In this equation,y

is already converted from a decimal, so, for example, a 55% obesity rate would correspond toy=55.

According to this formula, in what year was the obesity rate 16.3 percent?