A demented scientist creates a new temperature scale the z

Question

Solve the all parts of given question:

Question: A demented scientist creates a new temperature scale, the "Z scale." He decides to call the boiling point of nitrogen 0 ?Z and the melting point of iron 1000 ?Z.

Part I: What is the boiling point of water on the Z scale?

Part II: Convert 1000 ?Z to the Celsius scale.

Part III: Convert 1000 ?Z to the Kelvin scale.

Please show each step and the equations you used. Thanks!