document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1185225>Question 1185225</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that you plan on taking a summer job selling magazine subscriptions.  The magazine company will pay you $1.25 for selling the first subscription.  For each additional subscription​ sold, the magazine company will pay you 15 cents more than what was paid for the previous subscription.  How much will you earn by selling 150 magazine​ subscriptions? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #816012 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=816012\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "The dollar amounts form an arithmetic sequence of 150 terms with first term 1.25 and common difference 0.15: 1.25, 1.40, 1.55, ...<br><BR>\n" );
document.write( "The sum of the terms of an arithmetic sequence is<br><BR>\n" );
document.write( "Sum = (number of terms) times (average of all the terms)<br><BR>\n" );
document.write( "In an arithmetic sequence, because of the constant spacing between terms, the average of all the terms is the average of the first and last terms.<br><BR>\n" );
document.write( "So to find the answer to the question, you can do the following:<br><BR>\n" );
document.write( "(1) determine the 150th (last) term: first term plus 149 times the common difference;<BR>\n" );
document.write( "(2) find the average of the first and last terms; and<BR>\n" );
document.write( "(3) multiply that average by the number of terms, 150.<br><BR>\n" );
document.write( "ANSWER: $1863.75<br><BR>\n" );
document.write( "If all you want is the answer, there it is....<br><BR>\n" );
document.write( "If you want to LEARN HOW to solve problems like this, perform the calculations I described and verify that you get the shown answer.<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );