Find the inverse of ( f(x) = √8x+8 ).
a) ( f⁻¹(x) = x²/8 - 1 )
b) ( f⁻¹(x) = x²/8 + 1 )
c) ( f⁻¹(x) = x²/64 - 1 )
d) ( f⁻¹(x) = x²/64 + 1 )