Please note the question on the first picture.

What is the slack time for activity D?

Please answer all with complete work! Studying for an exam!

Use the following information for questions 17 to 26. Egon Spengler is planning a charity benent gala for his "Save the city campaign. However, because one of his partners, Peter Venkman, has difficulty staying on task, the project is scheduled and they are running out of time. Egon has used project management principles to lay out the task relationships and he finds that if they follow the traditional schedule, as outlined below, they will not have enough time to get everything done before the weekend of the gala. Egon has created a list of tasks, their time requirements, and their relationships. He has also begun a network diagram, but needs to know what to do next. He knows that he needs to reduce the total time by three weeks Ach Duration Crash Activity weeks) Time Description " (weeks) Preceding Crashing Activitylles) Cost/Week Determine gala theme $900 B 5 5 Reserve portal location for gala $1.020 Create Marketing Plan $980 D 6 6 Ray Parker, Jr.to audition musical B $1,500 acts Determine ticket sales method $630 Purchase supplies. including Stay F 7 5 5700 Putt marshmallows Pick musical actD and sign contract $550 Sell tickets in person $690 I 5 5 Sell tickets online E $1,150 Gala! H, I,F,G QO DOO What is the slack time for activity D?Enter your answer as a numerical whole number. Question 22 3 pts Activity C can be crashed how many times? .0 Question 23 3 pts What is the minimum completion time for the project after crashing (until no more crashing is possible)? 27 weeks 28 weeks .29 weeks 30 weeks Question 24 3 pts If Egon has a budget of only $2,000 for crashing costs, what is the shortest possible completion time? 27 weeks 28 weeks 29 weeks 30 weeks