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What are the first five terms?  Need help I don’t understand

 

 Sep 7, 2020
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Like this:

 

\(a_1=7\\~\\ a_2=3*a_{(2-1)}-6\\ a_2=3*a_{1}-6\\ a_2=3*7-6\\ a_2=21-6\\ a_2=15\\~\\ a_3=3*a_{(3-1)}-6\\ etc \)

 Sep 7, 2020

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