document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1174634>Question 1174634</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The phone company NextFell has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 500 minutes, the monthly cost will be $237. If the customer uses 910 minutes, the monthly cost will be $401.\r<BR>\n" );
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document.write( "A) Find an equation in the form y=mx+b, where x is the number of monthly minutes used and y is the total monthly of the NextFell plan.\r<BR>\n" );
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document.write( "Answer: y=<BR>\n" );
document.write( "  \r<BR>\n" );
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document.write( "B) Use your equation to find the total monthly cost if 652 minutes are used.\r<BR>\n" );
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document.write( "Answer: If 652 minutes are used, the total cost will be  dollars. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #800100 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=800100\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> make two ordered pairs (500, 237), (910, 401) with the independent variable (that can be selected) being x and the dependent variable (y) the result from x.<BR>\n" );
document.write( "slope is 164/410=0.4<BR>\n" );
document.write( "point slope formula y-y1=m(x-x1) m slope, (x1, y1) point<BR>\n" );
document.write( "y-237=0.4(x-500)<BR>\n" );
document.write( "y=0.4x+37<BR>\n" );
document.write( "when x=652, y=$260.80+$37=$297.80. </SPAN>\n" );
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