document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1146565>Question 1146565</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The monthly revenue R achieved by selling x wristwatches is figured to be  R(x)=71x-0.2x^2. The monthly cost C of selling wristwatches is C(x)=26x+1600.<BR>\n" );
document.write( "a) How many wristwatches must the firm sell to maximize​ revenue? What is the maximum​ revenue?<BR>\n" );
document.write( "b. Profit is given as P(x)=R(x)-C(x). What is a profit function? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #767865 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=767865\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Maximum revenue maximizes -0.2x^2+71x, where a=-0.2 and b=71<BR>\n" );
document.write( "the x-value for this quadratic's maximum if -b/2a=-71/-0.4 or 177.5 watches<BR>\n" );
document.write( "177 revenue is <BR>\n" );
document.write( "$18832.80<BR>\n" );
document.write( "178 revenue is $6301.20<BR>\n" );
document.write( "177 revenue is $6301.20<BR>\n" );
document.write( "either of those maximizes revenue<BR>\n" );
document.write( "profit function is their difference or -0.2x^2+45x-1600=P(x)\r<BR>\n" );
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document.write( " </SPAN>\n" );
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