Now that we actually have some "past due" homework, it's a good time for you to make sure you understand how to get extensions on homework. Occasionally you're likely to need an extension. The automatic extensions feature lets you file for "automatic" approval of an extension that will allow you to receive 75% credit for work done late. Read the section on "Extensions" under the WebAssign tab at this class website. There is no limit on how many extensions you can get throughout the semester, but there is a limit of 2 extensions per assignment.
If you need a homework extension and want to request an automatic extension, just look at your past due WebAssignments. Beneath each recent past due assignment you'll see a link to request an automatic extension. (See picture.)