I need help with an algebra problem

User Generated

cgureevna

Mathematics

Description

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, ...

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Explanation & Answer

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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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Anonymous
Awesome! Perfect study aid.

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