document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172728>Question 1172728</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please solve this <BR>\n" );
document.write( "A city centre tour guide currently charges $34 for a full day’s tour. The average number of <BR>\n" );
document.write( "customers is 48. Market research suggests that for every $1 increase in tour price, the guide can <BR>\n" );
document.write( "expect to lose two customers per tour.<BR>\n" );
document.write( "(a) Show that if the price increase is $x, then the expected revenue from each tour is<BR>\n" );
document.write( "−2x2− 20x + 1632<BR>\n" );
document.write( "(b) The guide needs to ensure that the expected revenue is at least $1440. By solving a quadratic <BR>\n" );
document.write( "inequality, find the range of prices that need to be charged.<BR>\n" );
document.write( "(c) What price should be charged to maximize expected revenue? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #797845 by </B><A HREF=/tutors/aboutme.mpl?userid=Solver92311><B>Solver92311(821)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Solver92311><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=Solver92311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=797845\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "Why did you post the same question more than once?\r<BR>\n" );
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document.write( "																<BR>\n" );
document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi}\ +\ 1\ =\ 0\"><BR>\n" );
document.write( "My calculator said it, I believe it, that settles it<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/display-illustration.mpl?tutor=Solver92311&illustration_name=darwinfish.jpg\">\r<BR>\n" );
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document.write( "From <https://www.algebra.com/cgi-bin/upload-illustration.mpl> <BR>\n" );
document.write( "I > Ø<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large \ \\r\"> </SPAN>\n" );
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