Answer:
Exponential growth functions are:



Exponential decay functions are:



Step-by-step explanation:
Given:
An exponential function is of the form
, where,
.
Now, if a > 0 and b > 1, then the exponential function represent exponential growth.
If a > 0 and 0 < b < 1, then the exponential function represent exponential decay.
Let us check each function now.
Option 1: 
Here, 
As 1.08 > 1, the function is exponential growth.
Option 2: 
Here, 
As 0.5 < 1, the function is exponential decay.
Option 3: 
Here, 
As 0.8 < 1, the function is exponential decay.
Option 4: 
Here, 
As 3 > 1, the function is exponential growth.
Option 5: 
Here, 
As 1.07 > 1, the function is exponential growth.
Option 6: 
Here, 
As 0.93 < 1, the function is exponential decay.