exam Maths Puzzle Numerical Ability

Pleas help me find the domain of the rational functions f(x)=3x-2/x-3. Thankyou.

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exam Other Question

r^3=108.9
r=? The inverse of f(x) is h(x). The composition of f and h is written f[h(x)]. What does f[h(x)] equal?
Hint: Think of a simple problem like f(x) = x + 3. Then the inverse, h(x) wou