Based on your post, I am assuming you are leaning towards a major in the humanities? GPA is king with the UC’s, so you need to work on getting your grades up. Since the UC’s only consider 10-11th grades in their GPA calculation, you need to focus on your 2nd semester and try to get as many A’s as possible. Can you drop down to regular Calculus next semester? Your rigor will take a slight hit, but it is better to get a higher grade in a lower level class than be struggling in the AP class.
At the end of Junior year, you can calculate your UC GPA using this calculator: https://rogerhub.com/gpa-calculator-uc/
All the UC’s use the capped weighted GPA and UCLA/UCB will consider the Fully weighted UC GPA also.
UC Davis also does not have any recommendations for SAT subject tests but your competitive test scores can help your chances.
Here are the Freshman profiles for all the UC’s. They list the 25th-75th percentile for UC capped weighted GPA and test scores. I would try to strive for at the least the averages for both areas so you have a decent chance at an acceptance. Remember there are 9 UC’s and 23 Cal states along with numerous private schools in CA so just do your best and you will get into a good school.
http://admission.universityofcalifornia.edu/freshman/profiles/index.html
GPA and test scores of middle 25%-75% students for UC Davis.
High School GPA: 3.95 - 4.25
ACT Composite Score: 26 - 32
ACT English Language Arts : 24 - 30
SAT Evidence Based Reading & Writing: 590 - 680
SAT Mathematics: 600 - 750
SAT Essay: 15 - 18