Question

The zero of F-1(x) in F(x) = x + 3 is

Answer 1

y=x+3

x=y-3
so
f-1(x)=x-3

Answer 2

but I need the zero

Answer 3

How do you find the zero?

Answer 4

ok lets do that
f-1(x)=0
x-3=0 then x=3

Answer 5

Oh okay that's understandable thanks, I was really confused!