At this time, the number of people who use a particular health plan is 19,250. The number of people who use the plan is expected to decrease by 14% each year.
Write an equation of the type you just identified that models the number of people who use the health plan, N, as a function of time in years from now, t.
If the number of people using the plan decreases by $14\%$ each year, then the number of people that will remain on the plan is $1 - 14\% = 86\%$. So, it can be modeled as
$$N (t) = 19250 (0.86)^t$$
where $t$ is in years.