Model Exponential Growth and Decay
Solve $\left( A = A _ { 0 } e ^ { k t } \right)$

Multiple Choice

Model Exponential Growth and Decay
Solve.
-An endangered species of fish has a population that is decreasing exponentially $\left( A = A _ { 0 } e ^ { k t } \right)$ . The population 9 years ago was 1500 . Today, only 1000 of the fish are alive. Once the population drops below 100 , the situation will be irreversible. When will this happen, according to the model? (Round to the nearest whole year.)

A) 51 years from today
B) 52 years from today
C) 50 years from today
D) 53 years from today