Determine the values of x, if any, at which each function is discontinuous. At each number where f is discontinuous, state the condition(s) for continuity that are violated.
f(x) = x+5 if x<0
= 2 if x=0
= -x^2+5 if x>0
f(x) = x+5 if x<0
= 2 if x=0
= -x^2+5 if x>0