re: What's the highest level of Math you use regularly?

I only completed Algebra 2 in high school but I somehow tested out of trig, precalc, and calc 1 entering college. My degree plan required paired math and so they placed me in calc 2. Never worked so hard for a C- in all my life.

I'm a business analyst by day now. Aggregates, pivots, that sorta thing. Basic geometry and trig at home for stuff like woodworking.