SAT Math: Advanced Math for 1500+ Scorers (SAT Test #4 extra math part 2/4)

This SAT Test #4 extra math part 2/4 is the hardest problems + most useful reminders from Test #4 of college board's old 10 practice tests. While they switched to the digital test, they said these 10 practice tests contain relevant problems, and they are perfect for achieving those final 50-100 points.
Specifically, this is the no-calculator section part 3 + calculator section part 4 from this exam: For some reason the link isn't working!
(answers: imgur.com/a/rh...)
I will be covering every single possible practice problem you can find online, as well as compiling guides, material, and especially advanced walk-throughs on how to achieve your highest possible score.
I've been tutoring the SAT for over 10 years, and I currently tutor over a dozen students each week, including usually half aiming for a 1500+ score.