The mice population is 25,000 and is decreasing by 20% each year. Write a model for this situation. What will be the mice population after 3 years?

Answer 1

Population can be found in an easier way. Population reduces by 20 Percent per year/

P = 25000(.80) = 20,000

P= 20000 (.80) =. 16000

P = 16000 (.80) = 12800 people after third year of decrease

Answer 2

P = 25,000 x 0.8^T

Where P is population

T is time in years

Solution for situation after A3 years:

0.8^3 = 0.512

0.512 x 25000 = 12800