can you please explain each one. Thank you.

... 3.32 Kimpel Products makes pizza ovens for commercial use. James Kimpel, CEO, is contemplating producing smaller ovens for use in high school and college kitchens. The activities necessary to build an experimental model and related data are given in the following table: ACTIVITY NORMAL CRASH NORMAL CRASH IMMEDIATE TIME TIME COST ($) COST PREDECESSOR(S) (WEEKS) (WEEKS) ($) A 3 2 1,000 1,600 B 2 2,000 2,700 1 1 300 300 D 7 3 1,300 1,600 A E 6 3 850 1,000 B F 2 1 4,000 5,000 G 4 2 1,500 2,000 DE a. What is the project completion date? b. Crash this project to 10 weeks at the least cost. c. Crash this project to 7 weeks (which is the maximum it can be crashed) at the least cost. Px