Question

If f(x)= 3-x and g(x)= x/x+1, what is g•f(x)?

Answer 1

Greetings from Brasil...

Where there is X in function G(X), we will replace by F(X)

F(X) = 3 - X and G(X) = X/(X + 1)

replacing....

G(F(X)) = (3 - X)/(4 - X)