Exponent Exploration: Real-Life Applications & Equations

A bacteria culture doubles in size every 3 hours. If the initial size is 100 bacteria, how many bacteria will there be after 12 hours?

• 2000

• 400

• 1600

• 800

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

• $15,000

• $12,500

• $10,240

• $8,000

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

• 1150.00

• 1500.00

• 1276.28

• 1000.00

The population of a town is 1,500 and is expected to grow by 10% each year. What will the population be after 2 years?

• 2000

• 1500

• 1650

• 1815

A cell phone plan offers 2GB of data per month, and the data usage doubles every month. If you start with 2GB, how much data will you have after 4 months?

• 16GB

• 8GB

• 32GB

• 64GB

A tree grows at a rate of 15% per year. If its current height is 10 feet, what will its height be after 2 years?

• 12.5 feet

• 13.225 feet

• 14.0 feet

• 15.0 feet

A savings account earns 3% interest compounded annually. If you deposit $500, how much will you have in the account after 4 years?

• $550.50

• $562.75

• $600.00

• $500.00

A computer's processing speed doubles every 18 months. If the current speed is 2 GHz, what will it be after 3 years?

• 6 GHz

• 10 GHz

• 4 GHz

• 8 GHz

A recipe calls for 2 cups of flour, and you want to triple the recipe. How many cups of flour do you need?

• 6 cups of flour

• 8 cups of flour

• 4 cups of flour

• 10 cups of flour

A population of fish in a lake is currently 200 and is expected to increase by 25% each year. What will the population be after 1 year?

• 150

• 250

• 200

• 300