Answer:
0.65
Explanation:
If we have an exponential equation of the form
[tex]y=ab^x[/tex]
where
a = inital amount
b = decay factor
Now in our case, the function we have is
[tex]y=900(0.65)^x[/tex]
therefore,
the inital amount = 900
the decay factor = 0.65
Hence, the decay factor of the exponential function is 0.65.
