  The number N of trees of a given species per acre is approximated by the model N 68(10-0.04x), 5 s x s 40, where x is the average diameter of the trees (in inches) 3 feet above the ground. Usethe model to approximate the average diameter of the trees in a test plot when N-22. (Round your answer to two decimal places.)

Question help_outlineImage TranscriptioncloseThe number N of trees of a given species per acre is approximated by the model N 68(10-0.04x), 5 s x s 40, where x is the average diameter of the trees (in inches) 3 feet above the ground. Use the model to approximate the average diameter of the trees in a test plot when N-22. (Round your answer to two decimal places.) fullscreen
Step 1

To estimate x for the given N , using the model

Step 2

To approximate (rough estimate)  the value of x, not necessary to fi...

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Calculus 