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The demand equation for rubies at Royal Ruby Retailers

The demand equation for rubies at Royal Ruby Retailers

The demand equation for rubies at Royal Ruby Retailers is

Q+1/2 P = 100

where q is the number of rubies RRR can sell per week at p dollars per ruby. RRR finds that the

demand for its rubies is currently 20 rubies per week and is dropping at a rate of one ruby per

week. How fast is the price changing? (Round your answer to the nearest cent.)

Rosa Parks 23-Nov-2017

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