document.write( "Question 1048869: An=A1 + (n-1)d \n" ); document.write( "
Algebra.Com's Answer #664503 by ikleyn(52797)\"\" \"About 
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\n" ); document.write( "Standard formula for the n-th term of an arithmetic progression.\r
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\n" ); document.write( "\n" ); document.write( "What help do you need?\r
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\n" ); document.write( "\n" ); document.write( "On arithmetic progressions, see the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - The proofs of the formulas for arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Problems on arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - Chocolate bars and arithmetic progressions\r
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