You can
put this solution on YOUR website!I don't think you stated the entire problem. You make reference to "functions" but you only specify one function, and the second part of the question implies that you need to evaluate a second and third (maybe more) functions for the same input values to see which of the functions is greatest or smallest for a given x value.
The evaluation of the one function you did give is correct for each of the values presented, so it is clear you are on the right track there.
Hope this helps,
John