document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=43198>Question 43198</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The price p and the quantity x sold of a certain product obey the demand equation <BR>\n" );
document.write( "x = 200 - 10p.<BR>\n" );
document.write( "Express the revenue function R as a function of the number of units sold, x.\r<BR>\n" );
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document.write( "  a. R = -10p2 + 200p    <BR>\n" );
document.write( "  b. R = x2    <BR>\n" );
document.write( "  c. R = x2 - 190x    <BR>\n" );
document.write( "  d. R = x2 + 20    <BR>\n" );
document.write( "  e. None of the others     </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #28275 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=28275\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Revenue = price per unit time units sold so that<BR>\n" );
document.write( "R = px<BR>\n" );
document.write( "Now if x = 200 - 10p, we can solve for p and get<BR>\n" );
document.write( "x - 200 = -10p<BR>\n" );
document.write( "p = (-1/10)x + 20<BR>\n" );
document.write( "and then by multiplying that by x, we get to R...<BR>\n" );
document.write( "R = px = (-1/10)x^2 + 20x<BR>\n" );
document.write( "Choice E. </SPAN>\n" );
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