Question

really need help

Answer 1

here is the problem

Answer 2

plug 7 into the second equation

Answer 3

I can try and help

Answer 4

\[f^{-1}(x) =\frac{ x-1 }{ 3 }\]let x=7:
\[f^{-1}(x) =\frac{ 7-1 }{ 3 }=\frac{ 6 }{ 3 }\]

Answer 5

did u get the help u needed

Answer 6

i am sorry i was away 6/3 is not one of the options

Answer 7

but 6/3 = 2