Step 1: Let's review the information given to us to answer the question correctly:
Initial population = 120 in 1990
Final population = 156 in 1994
Step 2: Let's find the change,in population, this way:
Change in population = Final population - Initial population
Change in population = 156 - 120
Change in population = 36
Step 3: Now, we know the change in population but we need to find the rate.
Rate in population = Change in population/Number of years
Rate in
