Evaluate and simplify f(x)= -4x+5

Question

I need help. I don’t know how to do this. Please respond. I just don’t know how I can simplify it. 

Answer 1

As stated, f(x) cannot be simplified further, since there are no like terms to group.  In order to evaluate f(x), we need the value of x.  There is not much more we can do with this problem.