<PRE><B>Question 117874</B>
The demand equation for a certain type of printer is given by D=-200p + 35,000

The supply equation is predicted to be s=-p^+400p-20,000
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D = S
-200p+35000 = -p^2+400p-20000
p^2-600p+55000 = 0

p = [600 +- sqrt(600^2-4*55000)]/2

p = [600 +- 374.1657]/2

p = 974.1657/2 or x = 225.8343/2

p = 487.08 or p = 112.92

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Cheers,
Stan H.</PRE>