Answer:
33.5%
Explanation:
The general form of an exponential equation showing decay is;
A = I(1-r)^t
The percentage part is 1-r
Equate this to what we have in the question
1-r = 0.665
r = 1-0.665
r = 0.335
This in percentage is 33.5%
4.5m questions
5.8m answers