document.write( "Question 79108: 
Find the accumulated interest of an investment of\r\n" );
document.write( "$17,000 at 6% compounded semiannually for 6 years. \r\n" );
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Algebra.Com's Answer #56807 by Edwin McCravy(20060)\"\" \"About 
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Find the accumulated intrest of an investment of\r\n" );
document.write( "$17,000 at 6% compounded semiannually for 6 years. \r\n" );
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document.write( "First we find the value of the investment at the end of 6 years:\r\n" );
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document.write( "\"A+=+P%281+%2B+r%2Fn%29%5E%28nt%29\"\r\n" );
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document.write( "where P = 17000, r = .06, n = 2, t = 6\r\n" );
document.write( "(we use n = 2 because \"semianually\" means \"2 times a year\")\r\n" );
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document.write( "\"A+=+%2817000%29%281+%2B+.06%2F2%29%5E%282%286%29%29+\"\r\n" );
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document.write( "\"A+=+%2817000%29%281+%2B+.03%29%5E%2812%29+\"\r\n" );
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document.write( "\"A+=+%2817000%29%281.03%29%5E%2812%29+\"\r\n" );
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document.write( "\"A+=+24237.93508\"\r\n" );
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document.write( "We round that DOWN to $24,237.93 even though the\r\n" );
document.write( "ordinary rule is to round up when the first\r\n" );
document.write( "discarded decimal is 5 or more.  Banks always\r\n" );
document.write( "round down to the lower penny when they are the \r\n" );
document.write( "ones paying out the money, (and of course they \r\n" );
document.write( "round UP to the next higher penny when you are \r\n" );
document.write( "one paying them a fee!)\r\n" );
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document.write( "Now the problem asks just for the interest earned,\r\n" );
document.write( "so we must subtract the original $17,000 to find\r\n" );
document.write( "how much interest was added:\r\n" );
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document.write( "$24,237.93 - $17,000 = $7,237.93\r\n" );
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document.write( "Edwin
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