Exponents in Action: Evaluate and Apply Exponential Concepts

A bacteria culture doubles in size every hour. If the initial size is 5 bacteria, how many will there be after 4 hours?

• 20

• 40

• 80

• 100

A computer's processing speed is measured in gigahertz (GHz). If a computer has a speed of 2^3 GHz, what is its speed in GHz?

• 8 GHz

• 2 GHz

• 16 GHz

• 4 GHz

A tree grows 2^5 inches each year. How tall will the tree be after 3 years if it starts at 10 inches?

• 110 inches

• 106 inches

• 98 inches

• 102 inches

A certain type of investment grows at a rate of 3^2 percent per year. If you invest $100, how much will it be worth after one year?

• 115

• 109

• 110

• 105

A video game has 2^4 levels. If each level takes 3 hours to complete, how many total hours will it take to finish all levels?

• 24 hours

• 60 hours

• 48 hours

• 36 hours

A population of fish in a lake increases by a factor of 2^3 every year. If there are currently 50 fish, how many will there be after 2 years?

• 3200

• 400

• 1600

• 800

A smartphone's battery lasts for 2^6 hours on a full charge. If you use it for 10 hours, how much battery life is left?

• 40 hours

• 54 hours

• 30 hours

• 20 hours

A square has a side length of 2^2 meters. What is the area of the square in square meters?

• 16 square meters

• 8 square meters

• 12 square meters

• 4 square meters

A car travels at a speed of 3^3 miles per hour. How far will it travel in 2 hours?

• 54 miles

• 60 miles

• 30 miles

• 48 miles

A recipe calls for 2^3 cups of flour. If you want to make half the recipe, how many cups of flour do you need?

• 1 cup

• 8 cups

• 4 cups

• 2 cups