Assume that the demand function for tuna in a small coastal town is given by
?
?
where q is the number of pounds of tuna that can be sold in 1 month at the price of p dollars per pound. The town's fishery finds that the demand for tuna is currently 900 pounds per month and is increasing at a rate of 200 pounds per month. How fast is the price changing? Round your answer to the three decimal places.
?
A. -$0.206 per pound per month
B. -$5.556 per pound per month
C. -$0.617 per pound per month
D. -$0.412 per pound per month
E. -$0.274 per pound per month
Answer: C
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