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September 25th, 2017, 02:19 PM  #1 
Senior Member Joined: Feb 2016 From: seattle Posts: 377 Thanks: 10  The annual increase I I in the deer population in a national park is ...............
Hi People after a break I am trying for the second time to try and figure out more of this algebra So I hope it is okay that I post this question here? Or should I have posted it somewhere else? Is it possible for someone to tell me how I would answer the ones I missed or where to at least start? is it possible to solve these that I am missing with out a calculator? The annual increase I in the deer population in a national park is given by the formula I = 1.2x − 0.0002x^2 Thanks for any help, hopefully I have not posted this question already since I always have so many questions. 
September 25th, 2017, 05:48 PM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 1,780 Thanks: 919 
Did you graph the growth formula? For (e) you're simply looking for the number of deer that makes the growth curve a maximum. You can just eyeball it from the graph to be 3000. and for (f) again you just eyeball it from the graph or plug 3000 into the growth formula to get 1800. 
September 26th, 2017, 01:02 PM  #3  
Senior Member Joined: Feb 2016 From: seattle Posts: 377 Thanks: 10  Quote:
 
September 26th, 2017, 02:11 PM  #4  
Senior Member Joined: Sep 2015 From: USA Posts: 1,780 Thanks: 919  Quote:
If you have to graph it by hand you just have to evaluate the growth formula at a selection of points like you say above. You have to plug those $x's$ into the formula and evaluate it to get the $y's$ That's not going to necessarily show you what the minimum is. Which is why they tell you to use a graphing calculator.  
September 26th, 2017, 02:23 PM  #5  
Senior Member Joined: Feb 2016 From: seattle Posts: 377 Thanks: 10  Quote:
 

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