exam Maths Puzzle Numerical Ability

(-27x^9)^⅓

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exam Other Question

x-3/4-2x - 1/x-2 + 1 = 0 Please help, seems too simple and it feels like a trap???

Q: Which of the following is a logarithmic function? Which an exponential function?

f(x)=x^2
L(t)=1-e^-t
g(q)=q^-2
R(x)=4ln(x)

Thank you for your help
Shelly