Ideal Gas question, please help!?

Question

An ideal gas goes from a state A through state B and ends at a state C. At state A the volume is 3.00 m3, at state B the pressure and volume are 100.00 kPa and 2.00 m3, and at state C the volume is 1.00 m3. For the process from A to B, the temperature is held constant, and the process from B to C is isobaric. Draw a PV diagram labeling states A,B, and C. Indicate which path is isothermal and which path is isobaric. Then, find the work done by a gas going from state A to state C