Final answer:
The annual rate of change in the population for the town in Iowa is approximately 321 people per year, calculated by dividing the change in population by the number of years over which the change occurred.
Step-by-step explanation:
To calculate the rate of change in the population for the town in Iowa, we subtract the initial population from the final population and then divide by the number of years over which the change occurred. This can be formulated as:
Rate of Change = (Final Population - Initial Population) / Number of Years
Applying the values given, the calculation would be as follows:
Rate of Change = (7945 - 5700) / (2005 - 1998) = 2245 / 7 = 320.71
Therefore, the annual rate of change is approximately 321 people per year, which we round from 320.71 for simplicity, making the correct answer Option B.