if \(f(\frac{2x-3}{x-2})=5x-2, \)what is \(f^-1(27)\)?
2. suppose a+b+c=1/a+1/b+1/c=5. and a*b*c=1
what is a^3+b^3+c^3?
a^3 + b^3 + c^3 = 18.
