Match each exponential function to the description of its percent rate of change.

Given in order:

22% growth12% growth12% decay20% decay

Step-by-step explanation:

The exponential function is in the form  

If r is positive (the number in the bracket is larger than 1), then it is exponential growth and if r is negative (the number in the bracket is less than 1), then it is exponential decay.

Growth or Decay by how much???

The amount that is greater than/less than 1

The first function's number inside the bracket is greater than 1 by 0.22 (22%). So it is "22% growth".The second function's number inside the bracket is greater than 1 by 0.12 (12%). So it is "12% growth".The third function's number inside the bracket is less than 1 by 0.12 (12%). So it is "12% decay".The fourth function's number inside the bracket is less than 1 by 0.2 (20%). So it is "20% decay".

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