The grading scheme is as follows:
The late penalty for HW assignments is 10% per day for at most 3 days, after which solutions are posted and HWs not yet turned in receive a grade of zero. Try to do the HW on your own. If you work in a group to solve a HW problem, identify the group members on your HW paper. If you use any sources except the textbook and classnotes, identify them.