100
O () = 97 +18
or()- +2
x= +
OF (x) = 97 +2
F(x) = -27 + -
10

first option

Step-by-step explanation:

let y = f(x) and rearrange making x the subject

y = x - 2 ( add 2 to both sides )

y + 2 = x ( multiply through by 9 to clear the fraction )

9y + 18 = x

change y back into terms of x with x = (x) , then

(x) = 9x + 18

one that is bigger than 3 1/2