If f(x) = 5x, what is f^-1(x)?
PLEASE HELP!!

Answer:
Option 3
Step-by-step explanation:
to get inverse function, swap x and y first:
f(x)=5x : y=5x --> x=5y
solve for y: y=1/5 x
use inverse notation: f^-1(x)=1/5 x