ALGEBRA - Texts and Ancillaries

First, there is of course Santos, O&A.

And there is Schremmer, RBA, an ongoing investigation into what is needed for as realistic a "Precalculus" course as could reasonably be presented to students in a so-called Developmental program, with a good number of students succeeding in the course but also, and infinitely more important, succeeding in Calculus.

Schremmer, RBA-v4.0

Schremmer, RBA-v6.1