π‘Pro Tip: For optimal viewing, watch Leeβs videos on a PC or Laptop rather than mobile devices.πChapter 12 - Burney HandoutπChapter 12 - HW Help Video (Barton/Owens)πChapter 12 - HW Help Video (Nichols iStudy)πChapter 12 - Problem 12-3B (Burney Extra Credit)