The function for a is (f o g) (x) = 8x^2-10.
Explanation
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I already knew that the g of x is equal to

so I substitute inside of the g of x

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simplify it

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The magnitude of this number is far from 1, so it's low correlation
Since it's negative, so it's low negative correlation
Here is your answer:
Since their no zeros (0) here's your answer:
6.174798604×10^9