Answer:
I think the answer is 2/15 but I'm not a hundred percent sure
Given the function f(x);
Evaluating the function f(x+h);
So;
Evaluating the second function;
simplifying further;
Therefore, we have;
4.3 + 11*x = x + 37.6
x = 333
4,9,14,19,24,29,34,39