Answer:
-4
Step-by-step explanation:
From the graph:
When n=2 , a^n =9
When n=4, a^n =1
The average rate of change between n=2 and n=4 is :
[tex]Rate= \frac{{{a_{2} -a_{4} } } }{2-4} \\=\frac{9-1}{-2} \\=-4\\[/tex]
The average rate of change is -4
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