Khan Academy is very useful when you are in need of additional instruction. The easiest way to locate information would be to type the title of the homework assignment into the search engine, and many content-related videos should prevail.
Carnegie offers online resources that may be of assistance to you. Below is the link for the online textbook and various resources.
Learnzillion offers many helpful math resources. Check them out with the link below.
Carnegie Online - MathiaX
This link will take you to the sign in page for our MathiaX software.
School ID: lwcross ms-85704
Username: student first name, last name initial and the last two digits of your student ID number (no spaces)
Password: Student generated after first login