AP Calculus BC 2019 FRQs #1

Errata:
At 13:30 I misspoke and wrote E(t)-R(t) instead of E(t)-L(t), however, I used E(t)-L(t) to calculate the values in the table (which are correct), and got the correct final answer.

0:00 Intro
00:25 Question Stem
1:19 Part A
3:38 Part B
6:36 Part C
15:35 Part D
18:54 Outro