Answer:
The function is decaying exponentially at a rate of 85% every year
Explanation:
0.15 is less than 1. This represents decay
Decay rate is 1 - 0.15 = 0.85 = 0.85*100 = 85%
t is given in years
Exponent is t, so it is every year.
The function is decaying exponentially at a rate of 85% every year
