document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=726661>Question 726661</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A theater has 37 seats in the first row, 41 seats in the second row, 45 seats in the third row and so on. how many seats are in row 15 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #444705 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=444705\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is an arithmetic sequence since the common difference is d = 41 - 37 = 4 each time. \r<BR>\n" );
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document.write( "First term: a1 = 37\r<BR>\n" );
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document.write( "Common Difference: d = 4\r<BR>\n" );
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document.write( "a(n) = a1 + d(n-1)\r<BR>\n" );
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document.write( "a(n) = 37 + 4(n-1)\r<BR>\n" );
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document.write( "a(n) = 37 + 4n-4\r<BR>\n" );
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document.write( "a(n) = 4n + 33\r<BR>\n" );
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document.write( "a(15) = 4(15) + 33\r<BR>\n" );
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document.write( "a(15) = 60 + 33\r<BR>\n" );
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document.write( "a(15) = 93\r<BR>\n" );
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document.write( "There are <font color=\"red\">93</font> seats in row 15. </SPAN>\n" );
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