document.write( "Question 65818: I asked this problem already and received an answer, but my teacher has said I need to have a certain format for the answer. I have looked and looked but to no help do not understand what she is looking for, thank you for the help:\r
\n" ); document.write( "\n" ); document.write( "The demand equation for a certain type of printer is given by:
\n" ); document.write( "D = -200p + 35,000
\n" ); document.write( "The supply equation is predicted to be:
\n" ); document.write( "S = -p^2 + 400p - 20,000\r
\n" ); document.write( "\n" ); document.write( "The answer I recieved was:
\n" ); document.write( "P = 487.08 and P = 112.92
\n" ); document.write( "Can anyone help me figure out what I am to use for a format and how it is to be set up. Thank you.
\n" ); document.write( "

Algebra.Com's Answer #46563 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
I believe you are supposed to find the point where
\n" ); document.write( "supply equals demand.
\n" ); document.write( "The demand equation for a certain type of printer is given by:
\n" ); document.write( "D = -200p + 35,000
\n" ); document.write( "The supply equation is predicted to be:
\n" ); document.write( "S = -p^2 + 400p - 20,000
\n" ); document.write( "The answer I recieved was:
\n" ); document.write( "P = 487.08 and P = 112.92
\n" ); document.write( "-----------------\r
\n" ); document.write( "\n" ); document.write( "I get P=112.91713 and 487.08
\n" ); document.write( "-------------
\n" ); document.write( "The work:
\n" ); document.write( "D=S
\n" ); document.write( "-200x+35000=-x^2+400x-20000
\n" ); document.write( "x^2-600x+55000=0
\n" ); document.write( "Use the quadratic formula to get:
\n" ); document.write( "x=[600+-sqrt(600^2-4*55000)]/2
\n" ); document.write( "x=[600+-sqrt140000]/2
\n" ); document.write( "x=[600+374.1657]/2 or x=[600-374.1657]/2
\n" ); document.write( "x=487.08 of x=112.9171
\n" ); document.write( "Note: x=P
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" ); document.write( "
\n" );