Final answer:
The given values of z are unbounded.
Step-by-step explanation:
The given values of z are 14, -700, -473, 4644, 84. To determine if z is closed, bounded, natural, or unbounded, we can analyze the range of the values. A closed set contains all its limit points. A bounded set has a finite upper and lower bound. A natural set can be defined as a set of real numbers. An unbounded set has no finite upper or lower bound.
In this case, since the given values of z span a wide range from -700 to 4644, z is unbounded. It does not have a finite upper or lower bound.