Answer:

Step-by-step explanation:
Given
See attachment
Required
Determine f(0)
To solve for f(0), we make use of:

Because:
is true for 
So, we have:




Answer:
y=(0.1)x and y=2(1/4)x represent exponential decay
the rest all are an equation used for exponential growth
On what? Adding subtracting making a fraction tree