SOLUTION: The equations S =5000 + 200x and D =9500 - 100x express the supply S and the demand D, respectively, for a popular music in terms of its price x (in dollars).

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Question 166586: The equations S =5000 + 200x and D =9500 - 100x express the supply S and the demand D, respectively, for a popular music in terms of its price x (in dollars).
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
You don't say what the problem is asking for, but I suspect they want to know the amount (x) when supply equals demand.
.
If so, set the two given equations equal to each other and solve for 'x':
5000 + 200x = 9500 - 100x
5000 + 300x = 9500
300x = 4500
x = $15