Question

An alligator population in a nature preserve in the Everglades decreases by 60 alligators over 5 years. What is the mean yearly change in the alligator population?

The mean yearly change in the alligator population is
alligators.

Answer 1

the mean yearly change in the alligator population is a decrease of 12 alligators per year.

Explanation:

Mean yearly change = Total change in population / Number of years

Total change in population = -60 alligators (as the population decreased)

Number of years = 5 years

Mean yearly change = -60 alligators / 5 years

Mean yearly change = -12 alligators per year