Exploring Exponential Growth in Real-Life Scenarios

A bacteria culture doubles in size every 3 hours. If there are initially 100 bacteria, how many will there be after 9 hours?

• 1600

• 400

• 200

• 800

A tree grows at a rate of 5% per year. If the tree is currently 20 feet tall, what will its height be after 4 years?

• 24.31 feet

• 30.50 feet

• 22.00 feet

• 26.00 feet

A population of rabbits increases by 30% each year. If there are 50 rabbits now, how many will there be in 2 years?

• 85

• 100

• 75

• 60

A savings account earns 4% interest compounded annually. If you deposit $1,000, how much will you have in the account after 5 years?

• 1216.65

• 1100.00

• 1500.00

• 1000.00

A certain species of fish in a lake grows exponentially. If there are 200 fish now and the population doubles every year, how many fish will there be in 3 years?

• 400

• 800

• 3200

• 1600

A viral video is viewed by 1,000 people on the first day and the views double each day. How many views will it have on the 5th day?

• 4000

• 8000

• 20000

• 16000

A car's value decreases by 15% each year. If the car is worth $20,000 now, what will its value be after 3 years?

• $12,282.50

• $15,000

• $10,000

• $8,500

A certain type of plant grows at a rate of 10% per month. If it is currently 15 cm tall, how tall will it be after 6 months?

• 20 cm

• 26.57 cm

• 30 cm

• 25 cm

A city’s population is currently 150,000 and is expected to grow by 5% each year. What will the population be in 3 years?

• 173644

• 165,000

• 160,000

• 180,000

A smartphone's price drops by 20% each year. If the current price is $800, what will the price be after 2 years?

• $512

• $640

• $720

• $400