Business Calculus Problem! Please Help!?

  • Thread starter Thread starter Bella
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Bella

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A company knows that unit cost C and unit revenue R from the production and sale of x units are related by C= R^2/120,000 +5420
Find the rate of change of revenue per unit, dR/du, when cost per unit is changing by $8 and the revenue is $1600.

Can anyone help me with this problem for my calc class? I got through most of it but I dont think I am getting the right answer...
 
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