Mastering Exponential Growth: Functions & Equations Quiz

A population of bacteria doubles every 3 hours. If there are initially 500 bacteria, how many will there be after 12 hours?

• 10000

• 2000

• 4000

• 8000

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

• $8,500

• $12,282.50

• $15,000

• $10,000

A certain investment grows at a rate of 8% per year. If you invest $1,000, how much will it be worth after 5 years?

• 1200.00

• 1469.33

• 1350.50

• 1580.75

The half-life of a radioactive substance is 10 years. If you start with 80 grams, how much will remain after 30 years?

• 20 grams

• 5 grams

• 40 grams

• 10 grams

A tree grows at a rate of 5% per year. If the tree is currently 10 feet tall, what will its height be after 4 years?

• 8 feet

• 12.16 feet

• 15 feet

• 10 feet

A certain species of fish in a lake is increasing exponentially. If there are 200 fish now and the population triples every year, how many fish will there be in 2 years?

• 1800

• 4000

• 1200

• 600

A bank offers a savings account with a 6% annual interest rate compounded annually. If you deposit $500, how much will you have after 4 years?

• 600.00

• 700.00

• 631.24

• 500.00

A certain type of mold grows at a rate of 25% per day. If you start with 10 grams, how much will you have after 3 days?

• 30 grams

• 15 grams

• 19.53 grams

• 12.5 grams

A town's population is currently 10,000 and is expected to grow by 3% each year. What will the population be in 5 years?

• 11000

• 12500

• 12000

• 11593

A radioactive isotope has a decay constant of 0.1 per year. If you start with 50 grams, how much will remain after 5 years?

• 40 grams

• 25 grams

• 30.33 grams

• 15 grams