document.write( "Question 1136792: The sequence 2​, 6​, 18​, 54​, ... is geometric. Find
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Algebra.Com's Answer #754621 by Edwin McCravy(20056)\"\" \"About 
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The sequence 2​, 6​, 18​, 54​, ... is geometric. Find
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document.write( "Since they are all the same, that shows that the sequence is\r\n" );
document.write( "geometric, and that the common ratio, r=3.\r\n" );
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(2) the ninth ​term,
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document.write( "2​, 6​, 18​, 54​, 54∙3=162, 162∙3=486, 486∙3=1458, 1458∙3=4374, 4374∙3=13122\r\n" );
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document.write( "a1 = 2, an+1 = 3∙an for n≥1.\r\n" );
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document.write( "an = a1∙rn-1\r\n" );
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document.write( "an = 2∙3n-1\r\n" );
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document.write( "Edwin
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