Indicate the project completion time and slack for each activity for the following set of activities. Please use a separate paper to $(1)$ draw all the paths: use the $3*2$ grid I used in the class, $(2)$ indicate the project completion time, and $(3)$ find the critical path. Take photos with your camera and upload them in the assignment section. $($please show all your work to receive full credits$-10$ points$)$