Question

If
ƒ(x ) = 3x + 1 and ƒ -1 = ,
then ƒ(2) =

Answer 1

1)-2
2)7

Answer 2

For first one, note that s/he just said ƒ -1. s/he could mean \(f^{-1}(x)\), which is not necessary equal to -2.

Answer 3

so

Answer 4

So?
You could be wrong...