Mastering Growth and Decay: Exponential Function Challenges

A population of rabbits doubles every year. If there are currently 50 rabbits, how many will there be in 3 years?

• 200

• 400

• 800

• 100

A car's value decreases by 15% each year. If the car is currently worth $20,000, what will its value be in 2 years?

• $16,000

• $18,000

• $12,000

• $14,450

A bacteria culture grows exponentially. If there are 200 bacteria now and it triples every hour, how many will there be after 4 hours?

• 2400

• 800

• 6000

• 16200

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

• $1,276.28

• $1,200.00

• $1,100.00

• $1,500.00

A tree grows at a rate of 10% per year. If it is currently 4 feet tall, how tall will it be in 3 years?

• 5.32 feet

• 7.2 feet

• 4.0 feet

• 6.0 feet

A radioactive substance decays at a rate of 8% per hour. If you start with 100 grams, how much will remain after 5 hours?

• 65.91 grams

• 80 grams

• 50 grams

• 100 grams

A certain species of fish in a lake increases its population by 25% each year. If there are currently 400 fish, how many will there be in 4 years?

• 800

• 600

• 1200

• 976

A smartphone loses 20% of its value each year. If it was purchased for $800, what will its value be after 3 years?

• $720.00

• $409.60

• $512.00

• $640.00

A certain type of mold doubles in size every 30 minutes. If you start with 10 grams, how much will you have after 2 hours?

• 120 grams

• 80 grams

• 200 grams

• 160 grams

A savings account has an annual interest rate of 3% compounded monthly. If you deposit $500, how much will you have after 2 years?

• 540.00

• 530.84

• 550.50

• 500.00