Latest exam Aptitude Question SOLUTION: If f(x) = 7x^5 - 3, then f ^-1(x) = a. [(x + 7)/5]1/3 b. [(x + 3)/5]1/7 c. [(x + 5)/7]1/3 d. [(x + 7)/3]1/5 e. [(x + 3)/7]1/5 f. [(x + 5)/3]1/7 g. none of these