The elephant population in American zoos is declining at a .15% rate. If the elephant population was 2312 in 1995, use the exponential equation to predict the population in 2015.

Question

The elephant population in American zoos is declining at a  .15% rate. If the elephant population was 2312 in 1995, use the exponential equation to predict the population in 2015.

rulnick · Answer

It is a .15% rate and not a 15% rate, right?  Then the prediction would be

2312(1-0.0015)^(2015-1995) = 2312(0.9985)^20 = ...

rulnick · Answer

Need more help?

rulnick · Answer

If so: (0.9985)^20 = 0.970424 (rounded).  So just multiply this by 2312 for your answer.