exam Maths Puzzle Numerical Ability

I need some help finding the equation of the inverse function if the function is invertible:
f(x)=3(cube root of 9x)

could someone help me with this please?

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exam Other Question

please help

6x^5(4x^2)



4x^2(3x)^3
A beauty shop sells for $75,000 and a 22% down payment is made. A 20-year mortgage at 6.5% is obtained.
o Find the down payment.
o Find the amount of the mortgage. Find the