Suppose that the price p (in dollars) of a product is given by the demand function 
where x represents the quantity demanded. If the daily demand is increase at a rate of 5 units per day, at what rate is the price changing when the demand is 64 units? Round your answer to two decimal places.
?
A. The price is decreasing at approximately 0.24 dollars per day.
B. The price is decreasing at approximately 0.04 dollars per day.
C. The price is decreasing at approximately 0.14 dollars per day.
D. The price is decreasing at approximately 0.03 dollars per day.
E. The price is decreasing at approximately 0.08 dollars per day.
Answer: B
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A. - 
B. - 
C. 
D. 
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A. slope: 
; y-intercept: 
B. slope: - 
; y-intercept: 
C. slope: - 
; y-intercept: 
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