In the sequence 2,6,18,..., which term is number 162? 162 = 2 x 3^(n -1) is this how you start it? then i get 81 = 3^(n-1) how do i solve that without using a calculator?
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simply try to find out: 3^1 = 3 < 81 3^2 = 9 < 81 3^3 = 27 < 81 etc.
Originally Posted by NeedHelp18 In the sequence 2,6,18,..., which term is number 162? 162 = 2 x 3^(n -1) is this how you start it? then i get 81 = 3^(n-1) how do i solve that without using a calculator?
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