Exploring Growth and Decay: Applying Functions and Formulas

A plant grows at a rate of 5 cm per week. If it starts at 10 cm, how tall will it be after 4 weeks?

• 40 cm

• 30 cm

• 15 cm

• 25 cm

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

• 200

• 800

• 1600

• 400

The population of a town decreases by 10% each year. If the current population is 1,000, what will the population be after 2 years?

• 750

• 650

• 900

• 810

A car's value decreases by 15% each year. If the car is worth $20,000 now, what will its value be after 1 year?

• $19,000

• $15,000

• $17,000

• $18,000

A savings account earns 4% interest compounded annually. If you deposit $500, how much will you have after 2 years?

• 550.00

• 520.00

• 600.00

• 540.80

A tree grows 3 inches in the first year and then 2 inches each subsequent year. How tall will the tree be after 5 years if it starts at 4 feet?

• 3 feet 11 inches

• 4 feet 10 inches

• 4 feet 11 inches

• 5 feet 2 inches

A certain species of fish decreases in population by 20% each year. If there are 500 fish now, how many will be left after 2 years?

• 320

• 600

• 400

• 250

A new video game console costs $400 and depreciates by 25% each year. What will be its value after 2 years?

• 225

• $400

• $300

• $350

A town's population grows by 5% each year. If the population is currently 2,000, what will it be in 3 years?

• 2315

• 2200

• 2450

• 2100

A loan of $1,000 has an interest rate of 6% per year. How much will be owed after 3 years if the interest is compounded annually?

• $1,191.02

• $1,100.00

• $1,250.00

• $1,180.00