What is the rate of decay?
y = 200(0.85)^4
A. 15%
B. 0.15%
C. 85%
D. 0.85%
The rate of decay is given by the exponent, which is 4. So, the rate of decay is 85%.
Therefore, the correct answer is C. 85%.
y = 200(0.85)^4
A. 15%
B. 0.15%
C. 85%
D. 0.85%
Therefore, the correct answer is C. 85%.