show the formulas

2. A small software development project has 9 major activities. The times are estimated and provided in the network below. [15 points) 2 3 A G 4 WH 7 7 H 3 2 (a) Using the method of ES, EF, LS, and LF, determine the project completion time? (b) Find the critical path(s). (c) State the non-critical activities. (d) Explain what it means if an activity has a slack of zero (give an example). (e) Explain what it means if an activity has a slack of non-zero (give an example) Formulas LF-EF or LS-ES EF Estt LS Lt 2 (4 4 t = a tunto 6 5) VE v & Output Output Input Labort Capital & Energy 8