document.write( "Question 733901: How do I figure the expression for this sequence: 8, 10, 12, 14... \n" ); document.write( "
Algebra.Com's Answer #448632 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Common Difference: d = 2 (since 10-8 = 2, 12-10 = 2, etc etc)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "First term: a1 = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "nth term\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "an = a1 + d(n-1)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "an = 8 + 2(n-1)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "an = 8 + 2n-2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "an = 2n + 6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So if n starts at n = 1, then the nth term is 2n + 6 \n" ); document.write( " |