A great way to get some systematic, detailed Algebra skill growth and practice whether you were comfortable in Algebra once but are rusty now, or you never really got it and need step-by step instruction. Or if you took Mark’s Basic Math Refresher and want to deepen your Algebra skills for strong algebraic performance on the GRE. (Perhaps 40% of the math questions you will be asked are algebra-related). With it comes Mark’s “Prescription” for various chapters, problems, and pages that are most importance for the GRE–perhaps only 60% of the book is related to the test most people will see. $16.50 includes a 10% discount and WA tax.