revenue is found with he equation r=pq where p is the price charged

Calculus
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revenue is found with he equation r=pq where p is the price charged and q is the quantity sold. If the price function is changing at a rate of 10 cents per day and the quantity sold is changing at -2 items per day. How is the revenue per day changing if the price is currently at $5 and the quantity sold is 100 items?

Jul 11th, 2015

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

as
revenue r = p*q

r = 5*100 = 500 revenue per day

revenue change per day = 10*2 = 20 cents per day....................................................... 

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Jul 11th, 2015

Hi Asem, thanks for your answer but wouldn't the revenue change be -20 cents per day, since the items are changing @ -2 items per day?

Jul 11th, 2015

o yes dear sorry that is a typing mistake
yeah it would be 100%  -20 cents per day


Jul 11th, 2015

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Jul 11th, 2015
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Jul 11th, 2015
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