A marine biologist models a population P of crabs, t days after being left to reproduce, with the function P(t)=-0.00003t^3+0.008t^2+3.5t+600
assuming that this model continues to be accurate, when will this population become extinct?
A) 547
B)707
C)911
D)1512
Math Help?
2015-07-23 7:37 pm
回答 (2)
2015-07-23 7:45 pm
If they are extinct P(t)=0
-.00003t^3+.008t^2+3.5t+600=0
This is best found by graphing the equation as factoring it would be ugly :P
From the graph it is easy to see that 547 is the point when the population drops to zero...
-.00003t^3+.008t^2+3.5t+600=0
This is best found by graphing the equation as factoring it would be ugly :P
From the graph it is easy to see that 547 is the point when the population drops to zero...
2015-07-23 7:44 pm
After approximately 546.874 days
Answer A is closest
Answer A is closest
收錄日期: 2021-04-21 12:00:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150723113724AAhrlZG