Modeling Population Growth & Decline: An 8th Grade Quiz

A town has a population of 5,000 people. If the population grows by 3% each year, what will the population be after 5 years?

• 5796

• 6200

• 6000

• 5500

A certain species of fish in a lake has a population of 1,200. If the population decreases by 10% each year due to overfishing, what will the population be after 3 years?

• 900

• 1,080

• 1,000

• 875

A city has a population of 20,000 and is experiencing a growth rate of 4% annually. How many people will live in the city after 10 years?

• 28000

• 29605

• 25000

• 31000

A small island has a population of 800 residents. If the population is declining at a rate of 5% per year, what will the population be in 4 years?

• 500

• 651

• 700

• 600

A new colony of bees starts with 150 bees and doubles in size every year. How many bees will there be after 3 years?

• 1500

• 300

• 1200

• 600

A forest has a population of 2,500 deer. If the population decreases by 15% each year due to hunting, what will the population be after 2 years?

• 1806

• 2200

• 1500

• 2000

A city’s population is currently 50,000 and is projected to grow by 2,500 people each year. What will the population be in 8 years?

• 60,000

• 75,000

• 70,000

• 65,000

A rare bird species has a population of 300. If the population increases by 20% each year, what will the population be after 2 years?

• 500

• 432

• 480

• 360

A town's population is 10,000 and is decreasing by 1% each year. What will the population be in 5 years?

• 9510

• 9800

• 9000

• 10050

A research study shows that a certain bacteria doubles its population every 6 hours. If the initial population is 500, what will the population be after 24 hours?

• 4000

• 10000

• 8000

• 2000