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Answer :

Answer:

Answer choice A. 2187

Step-by-step explanation:

[tex]a_{7}[/tex]=-3*(3)^(7-1)

[tex]a_{7}[/tex]=-3*(3)^6

[tex]a_{7}[/tex]=3*729

[tex]a_{7}[/tex]=2187

Hope this helps!

If not, I am sorry.