Given the following information, answer the questions about this project:

Activity	Expected Duration	Predecessors
A	4 days
B	9 days	A
C	11 days	A
D	5 days	B
E	3 days	B
F	7 days	C
G	3 days	D, F
H	2 days	E, G
I	1 day	H

1. Draw the network as a Gantt chart.
2. What is the critical path? Which activities have slack time?
3. What would happen if activities B and D each took 5 extra days to complete instead of the expected duration? How would the critical path change?