Answer:
64x²y²
Step-by-step explanation:
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14 patients for each nurse
The factored form would be (3x-9)(x-1)
The picture should help a bit
The given sequence is:

a(2)=1
a(3)=3
a(4)=9
We are to find the average rate of change between n=3 and n=4 for the given function.
Average rate of change =

So the average rate of change for the given function from n = 3 to n = 4 is 6