Question 50557
f(x) = 5x^7 - 3
y = 5x^7 - 3
x = 5y^7 - 3
x + 3 = 5y^7
(x + 3)/5 = y^7
([x + 3]/5)^(1/7) = f^-1(x)
answer: b.
{{{graph(600,600,-15,15,-15,15,x,5x^7-3,((x + 3)/5)^(1/7))}}}