Pre-calculus background quick review
This is a "quick" review of selected Khan Academy lessons you must take if you fail the ABS pre-calculus exam. They should take 1-3 hours, depending on your skill level. You must take these before retaking the ABS exam. However, unlike the ABS exams, you may use a calculator on the quick review problems.
Solving equations involving square-roots - lesson 1
Composite functions - lesson 1
Those failing the ABS exam and, after this training, the retake are at risk of being placed into sm005.
If you don't know these topics well enough, here are some references to help you review before taking the online exams.