exam Maths Puzzle Numerical Ability

I have been struggling on how to do this problem and I was wondering if someone could help me? Please and Thank You!! I would deeply appreciate it!!

Let f(x)=x^2-1 and g(x)=1-2x. Find the idicated values.
g(1/f(3))

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exam Other Question
How do I figure this one out? 17. Build each rational expression into an equivalent rational expression with the indicated denominator.
-9z = ____?____
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2aw 8aw Hello out there,I need some help with a couple of problems,the first one is,Name the set or sets of numbers to which the given real number belongs:0.1,is it real,rational or real,r