Hello!
These chapter 4 assignments are done through mymathlab.com,
Its a chapter 4 skill check quiz which is 10 problems, chapter 4 review hw (which is locked until you do the skills quiz but usually has around 10 problems), Chapter 4 Hw which is 32 problems, and the Chapter 4 Test 4 which is only 10 problems.
The test is timed for an hour and 15 minutes but everything else is not timed.