Question 117436
No, you are wrong!
f(x) = 5x - 1
To find f(a-2) you have to replace 'x' with 'a-2' everywhere as follows
f(a - 2) = 5(a - 2) - 1
f(a - 2) = 5a - 10 - 1
f(a - 2) = 5a - 11