Use photomath , its easier it tells you the steps
Answer:
115.08
Step-by-step explanation:
...more information is clearly needed
Answer:
Town C.
Step-by-step explanation:
Average change of population with time for town A = 
Average change of population with time for town B = 
Average change of population with time for town C = 
Average change of population with time for town D = 
Town C had the greatest average change in population over time (800/yr).