Question 787252
f(x)=5x–1


9 = 5x–1 ... replace f(x) with 9 (since we're told that f(x) = 9)


9+1 = 5x–1+1


10 = 5x


5x = 10


5x/5 = 10/5


<font color="red">x = 2</font>