Exponential Growth & Decay: Solve Fun Equations!

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

• 400

• 200

• 800

• 100

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

• $16,000

• $12,000

• $14,450

• $18,000

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

• 24000

• 16200

• 8000

• 12000

A tree grows at a rate of 5% per year. If the tree is currently 10 feet tall, what will its height be after 5 years?

• 10 feet

• 12.76 feet

• 8 feet

• 15 feet

A bank account earns 4% interest compounded annually. If you deposit $1,000, how much will you have in the account after 3 years?

• 1100.00

• 1200.00

• 1000.00

• 1124.86

A radioactive substance decays at a rate of 25% per hour. If you start with 80 grams, how much will remain after 2 hours?

• 20 grams

• 30 grams

• 45 grams

• 60 grams

A certain species of fish in a lake increases its population by 30% each year. If there are currently 300 fish, how many will there be in 2 years?

• 507

• 400

• 390

• 450

A car depreciates in value according to the function V(t) = 25000(0.85)^t, where t is the number of years. What will the value be after 4 years?

• 10000.75

• 15000.00

• 20000.50

• 13050.16

A tree's height can be modeled by the function H(t) = 15(1.1)^t, where t is the number of years. How tall will the tree be after 6 years?

• 20.45

• 30.12

• 26.57

• 18.75

A certain type of mold grows at a rate of 50% per day. If you start with 10 grams, how much will you have after 3 days?

• 50 grams

• 40 grams

• 33.75 grams

• 25 grams