The current population of a small city is 37000 people. Due to a loss of jobs, the population is decreasing by an average of 200 people per year. How many years (from now) will it take for the population to decrease to 33800 people?
Assuming that the decrease is linear ...
pop = 37000 - 200t, where t is the number of years, the solve for t
33800 = 37000 - 200t