I need help with an algebra problem

label Algebra
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The sequences below are either arithmetic or geometric.  For each sequence, determine whether i it is arithmetic or geometric, and write the formula for the nth term an of that sequence

                                    TYPE               nth term formula

16, 19, 22, ...    

7, 21, 63, ...

Nov 27th, 2015

Thank you for the opportunity to help you with your question!

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16, 19, 22, ...    


So the sequence has a common difference of 3 and hence is an arithmetic sequence.


The nth term of the sequence is


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7, 21, 63, ...


So the sequence has a common ratio of 3 and hence is a geometric sequence.


The nth term of the sequence is


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Please let me know if you need any clarification. I'm always happy to answer your questions.
Nov 27th, 2015

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Nov 27th, 2015
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