Exercise: Reversible Process described by a PV relation

Exercise: 
Reversible Process described by a PV relation
A particular substance undergoes, expanding from an initial state of 20 bar to a final state of 8 bar. The path for the process is described by the equation:
  P = (0.036/V) – 4
where P is in bar, and V is in m3. If \( \Delta \)U for the change of state is
-1400 J, determine W, Q, and \( \Delta \)H.