document.write( "Question 429511: Can someone show me how to work these?\r
\n" ); document.write( "\n" ); document.write( "Find the 5th term for each:\r
\n" ); document.write( "\n" ); document.write( "1: A1=20, An=1/2A(n-1)+2
\n" ); document.write( "2: An=8n-5
\n" ); document.write( "3: A1=1/2, An=2A(n-1)\r
\n" ); document.write( "\n" ); document.write( "I came up with 35 for #2, but I'm not even sure that's right. These are confusing me!
\n" ); document.write( "Thanks!
\n" ); document.write( "

Algebra.Com's Answer #298302 by vleith(2983)\"\" \"About 
You can put this solution on YOUR website!
you are correct for number 2. Let's do problem 1 and then you can use the same process to do 3.\r
\n" ); document.write( "\n" ); document.write( "You are given
\n" ); document.write( "\"A%5Bn%5D+=+%281%2F2%29A%5Bn-1%5D+%2B2\" and told \"A%5B1%5D=20\"
\n" ); document.write( "So now find \"A%5B2%5D\"
\n" ); document.write( "Plug in 2 for n in the given forumula
\n" ); document.write( "\"A%5B2%5D+=+%281%2F2%29A%5B2-1%5D+%2B2+\"
\n" ); document.write( "\"A%5B2%5D+=+%281%2F2%29A%5B1%5D+%2B2+\"
\n" ); document.write( "Now you see this formula contains \"A%5B1%5D\" which you know is 20. So subsitute 20 and solve
\n" ); document.write( "\"A%5B2%5D+=+%281%2F2%2920+%2B2+\"
\n" ); document.write( "\"A%5B2%5D+=+10+%2B2+\"
\n" ); document.write( "\"A%5B2%5D+=+12+\"\r
\n" ); document.write( "\n" ); document.write( "Now you have \"A%5B2%5D\". So now solve for when n=3
\n" ); document.write( "\"A%5B3%5D+=+%281%2F2%29A%5B3-1%5D+%2B2+\"
\n" ); document.write( "\"A%5B3%5D+=+%281%2F2%29A%5B2%5D+%2B2+\" you know \"A%5B2%5D\" because you just solved for it above. Plug 12 in for \"A%5B2%5D\" and solve for \"A%5B3%5D\"
\n" ); document.write( "\"A%5B3%5D+=+%281%2F2%2912+%2B2+\"
\n" ); document.write( "\"A%5B3%5D+=+6+%2B2+\"
\n" ); document.write( "\"A%5B3%5D+=+8+\"
\n" ); document.write( "Keep doing this process for n = 4 and then again for n=5.
\n" ); document.write( "\"A%5B4%5D+=+%281%2F2%298+%2B2+=+6\"
\n" ); document.write( "\"A%5B5%5D+=+%281%2F2%296+%2B2+=+5\"\r
\n" ); document.write( "\n" ); document.write( "Use the same process for problem 3\r
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