Using the OpenStax’s “Algebra and Trigonometry” text,
There are 13 units, with approximately 6 sections per unit (range from 3 to 8). That’s approximately 78 – 80 sections. If we completed 2 – 3 sections per week. That would be 8 months to complete.
If I bump it up to 3 sections per week and about 2 1/2 units per month. That’s 6 months to complete, and probably about 10 hours per week.