Can someone please help me understand.

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In forestry management it is important to know the net stumpage value of a stand (that is, a group) of trees. This is the commercial value of the trees minus the costs of felling, hauling, etc. The graph in the figure shows the net stumpage value V, in dollars per acre, of a Douglas fir stand in the Pacific Northwest as a function of the age t, in years, of the stand.
(a) Estimate the net stumpage value of a Douglas fir stand that is 100 years old.
 

(b) Estimate the age of a Douglas fir stand whose net stumpage value is $20,000 per acre.
 yr
Sep 8th, 2015

Thank you for the opportunity to help you with your question!

Hey!  I think you forgot to post the graph.  I'll solve it once you send it over, thanks! :)

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 8th, 2015

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Sep 8th, 2015
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Sep 8th, 2015
Aug 23rd, 2017
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