document.write( "Question 927495: an auditorium has 50 rows of seats. There are 8 seats in the first row, 10 seats in the second row, 12 seats in the third row, and so on. How many seats are in the auditorium \n" ); document.write( "
Algebra.Com's Answer #563006 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
1st row: 8 + 0
\n" ); document.write( "2nd row: 8 + 2
\n" ); document.write( "3rd row: 8 + 4
\n" ); document.write( "4th row: 8 + 6
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\n" ); document.write( "The formula for adding up the numbers:
\n" ); document.write( "1 + 2 + 3 + 4 + 5 + . . . is:
\n" ); document.write( "\"+n%2A%28+n%2B1+%29+%2F+2+\" where \"+n+\"
\n" ); document.write( "is the last number
\n" ); document.write( "--------------------
\n" ); document.write( "The 1st term in your sequence is:
\n" ); document.write( "\"+50%2A8+=+400+\"
\n" ); document.write( "The 2nd term in the sequence is:
\n" ); document.write( "2*( 1 + 2 + 3 + 4 + . . . + 49 )
\n" ); document.write( "\"+2%2A49%2A50+%2F+2+=+2450+\"
\n" ); document.write( "Note that the last term is \"+49+\" because
\n" ); document.write( "the 1st term is \"+0+\"
\n" ); document.write( "--------------------
\n" ); document.write( "\"+400+%2B+2450+=+2850+\"
\n" ); document.write( "There are 2850 seats in the auditorium
\n" ); document.write( "Hope I got it -you might get a 2nd opinion, too\r
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