Will I need a strong math background (or science or humanities) to take it? I will be a senior next year and I’ve taken Geometry, Pre Calculus and Advanced Algebra (planning to take AP Stats or Calc AB next year as well)
Would Econ be helpful even though I am not planning to major in economics (I’m planning to major in biology or psychology).
I think you will be fine. And fwiw, this introductory level of economics will be very helpful in understanding a lot about how the world works. A good choice.
No you won’t need more than Pre calc for AP Econ. It is not super difficult and you will most likely do well on the AP test and will get college credit. It is also just useful for all around knowledge.