The population of a small town in central Florida has shown a linear decline in the years 1993-2004. In 1993 the population was 23700 people. In 2004 it was 15890 people.
A) Write a linear equation expressing the population of the town, P, in terms of t, the number of years since 1993.
B) If the town is still experiencing a linear decline, what will the population be in 2009?