document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=297541>Question 297541</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The charge C, for renting an air hammer from Taylor and Son Equipment Rental is a linear function the number of days (n) in the rental period. The charge is<BR>\n" );
document.write( "$113 for 2 days and $209 for 5 days.\r<BR>\n" );
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document.write( "(a) Write C as a linear function of n. Your equation should look like C= an + b<BR>\n" );
document.write( "    Where you need to find the values of a + b using  the information above as<BR>\n" );
document.write( "    ordered pairs (2, 113) and (5, 209)\r<BR>\n" );
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document.write( "(b) What would the charge be for 4 days </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #214223 by </B><A HREF=/tutors/aboutme.mpl?userid=TakeishaM><B>TakeishaM(13)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TakeishaM><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=214223\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First, find the slope using the points. Slope (M) = y2-y1/x2-x1\r<BR>\n" );
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document.write( "(2,113) (5,209)\r<BR>\n" );
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document.write( "M = (209-113)/(5-2) <BR>\n" );
document.write( "  = 96/3<BR>\n" );
document.write( "  = 32\r<BR>\n" );
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document.write( "Now pick a point, say (2,113).  Plug in the x,y and m values in the equation and solve for b\r<BR>\n" );
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document.write( "113 = 32(2) + b<BR>\n" );
document.write( "113 = 64 + b<BR>\n" );
document.write( "113-64 = 64-64+b<BR>\n" );
document.write( "49 = b\r<BR>\n" );
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document.write( "Your equation is C = 32n + 49\r<BR>\n" );
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document.write( "The cost for 4 days...just plug in 4 for n. Multiply 4 times 32 and add that to 49\r<BR>\n" );
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document.write( " C = 32(4)+49<BR>\n" );
document.write( " C = 177 </SPAN>\n" );
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