document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1111721>Question 1111721</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone help me solve this problem?\r<BR>\n" );
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document.write( "A museum curator can use the equation C = 3x + square root of (50x + 9000) to find the<BR>\n" );
document.write( "cost C (in dollars) for taking x people on a tour of the museum.\r<BR>\n" );
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document.write( "16. If the cost is $160, how many people went on a tour?\r<BR>\n" );
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document.write( "17. If the curator charges each person $10 to go on the tour, write an<BR>\n" );
document.write( "expression for the revenue generated.\r<BR>\n" );
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document.write( "18. How many people must go on the tour for the curator to break even? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #726764 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=726764\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 16) 160 = 3x + square root of (50x + 9000) <BR>\n" );
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document.write( "3x + square root of (50x + 9000) = 160<BR>\n" );
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document.write( "square root of (50x + 9000) = 160 -3x<BR>\n" );
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document.write( "square both sides of the =<BR>\n" );
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document.write( "50x + 9000 = 25600 -960x +9x^2<BR>\n" );
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document.write( "9x^2 -1010x +16600 = 0<BR>\n" );
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document.write( "factor the equation<BR>\n" );
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document.write( "(x-20) * (9x-830) = 0<BR>\n" );
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document.write( "x -20 = 0<BR>\n" );
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document.write( "x = 20<BR>\n" );
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document.write( "9x-830 = 0<BR>\n" );
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document.write( "x = 830/9<BR>\n" );
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document.write( "reject the fraction answer(it does not solve equation), 20 people went on tour<BR>\n" );
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document.write( "17) Revenue = 10x<BR>\n" );
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document.write( "18) 10x = (3x + square root of (50x + 9000))<BR>\n" );
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document.write( "square root of (50x + 9000) = 7x<BR>\n" );
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document.write( "x = 14<BR>\n" );
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document.write( "14 people is the break even point<BR>\n" );
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