document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=887747>Question 887747</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If you rent a canoe for 3 hours, you will pay $45. The hourly rate for renting a canoe is $10 per hour. Write a linear equation to find the total cost C of renting the canoe for h hours. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #536843 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39621)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=536843\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Some information must be found for the extra cost.\r<BR>\n" );
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document.write( "<i>\"you rent a canoe for 3 hours, you will pay $45.\"</i>\r<BR>\n" );
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document.write( "That is 45/3=15 dollars per hour.\r<BR>\n" );
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document.write( "<i>\"The hourly rate for renting a canoe is $10 per hour.\"</i>\r<BR>\n" );
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document.write( "The rental cost and the hourly rate charge are not the same.\r<BR>\n" );
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document.write( "The problem description does not contain information for how the hourly cost and the rental cost are related.  You want C as a function of h; with C being the cost and h being the number of hours.  Are we supposed to assume there is a FIXED cost as part of renting the canoe?  Call this b.\r<BR>\n" );
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document.write( "You may have these two data points, (h, C).<BR>\n" );
document.write( "(0, b) and (3, 45).<BR>\n" );
document.write( "The slope would be in units of dollars per hour, and this must be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10%28dollars%2Fhour%29 ALIGN=MIDDLE  ALT=\"10%28dollars%2Fhour%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "You have some equation, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28C=10h%2Bb%29 ALIGN=MIDDLE  ALT=\"highlight_green%28C=10h%2Bb%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  <BR>\n" );
document.write( "You know a point (3, 45) but you do not yet know b.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C-10h=b ALIGN=MIDDLE  ALT=\"C-10h=b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=C-10h ALIGN=MIDDLE  ALT=\"b=C-10h\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=45-10%2A3 ALIGN=MIDDLE  ALT=\"b=45-10%2A3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=15 ALIGN=MIDDLE  ALT=\"b=15\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "So the equation is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28C=10h%2B15%29 ALIGN=MIDDLE  ALT=\"highlight%28C=10h%2B15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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