Exponential Growth and Decay

Which graph represents exponential decay?

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• 
• 
• 

Is this exponential growth or decay?

• Growth

• Decay

Write an equation for the table

Write an equation

Write an equation

If the decay rate is 20%, which of the following represent the decay factor?

• 0.2

• 0.8

• 1.2

• 1.8

A flea medicine breaks down at a rate of 20% per hour. This is the rate of decay of the medicine. The initial dose is 60 milligrams. Which of the following represent the equation the models the amount of flea medicine left in an animal?

The value of a car depreciates exponentially. Identify the decay factor is the car was worth $20,000 initially and worth $15,000 after 1 year.

• 1.33

• 0.75

• 0.66

• 0.25

Find the decay factor from the given graph.

Which equation represents the given table?