Can I pass the AP Calc BC exam with three weeks of intense review?

You might want to consider using a few AP prep websites, you’ll be able to get a broad range of study information and since it’s online, repetitive studying is made relatively easy. Here’s a few website to get you started!

https://www.khanacademy.org/math/integral-calculus/ap_calc_topic
http://www.learnerator.com/ap-calculus-ab-bc
http://study.com/academy/course/ap-calculus.html