document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=193959>Question 193959</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need some advice. Could someone please tell me if my answer is right? I don't need to show the problem, just the answer.                                                                        Media services charges $20 for a phone plus $30mth for it's cheapest plan. The equation c=30t+20 describes the total cost,c, of operating a Media Services phone for tmths. What is the total cost for 8 mths. of service? I got $260, is that right?  Then the second part is what I'm not sure of. If a customer only has $90 available, how many mths of services can he or she recieve? I divided by 90 without the $20 it's 2.6 and then I added the $20 it's 2.8. Is this right and which way did they mean it? Than-x I appreciate it. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #145680 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=145680\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Your answer to the first part is correct!<BR>\n" );
document.write( "For the second part, you need to set the total cost, c = $90 then solve for t, thus...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+30t%2B20 ALIGN=MIDDLE  ALT=\"c+=+30t%2B20\"   DISABLED_style= \"max-width:90%; height:auto;\" > Substitute c = 90<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=90+=+30t+%2B+20 ALIGN=MIDDLE  ALT=\"90+=+30t+%2B+20\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 20 from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=70+=+30t ALIGN=MIDDLE  ALT=\"70+=+30t\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now divide both sides by 30.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=70%2F30+=+t ALIGN=MIDDLE  ALT=\"70%2F30+=+t\"   DISABLED_style= \"max-width:90%; height:auto;\" > so...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+2.333 ALIGN=MIDDLE  ALT=\"t+=+2.333\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "For $90 the customer can get 2 1/3 months of service.<BR>\n" );
document.write( "Check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+30t%2B20 ALIGN=MIDDLE  ALT=\"c+=+30t%2B20\"   DISABLED_style= \"max-width:90%; height:auto;\" > Substitute t = 2 1/3<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+30%282.333%29%2B20 ALIGN=MIDDLE  ALT=\"c+=+30%282.333%29%2B20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+70%2B20 ALIGN=MIDDLE  ALT=\"c+=+70%2B20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+90 ALIGN=MIDDLE  ALT=\"c+=+90\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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