π‘Pro Tip: For optimal viewing, watch Leeβs videos on a PC or Laptop rather than mobile devices.πCHAPTER 4 HW HELP (Burney Handout)πCHAPTER 4 HW HELP (Quick Studies)πCHAPTER 4 HW HELP (Exercises)πCHAPTER 4 HW HELP (Problem 4-2A)πCHAPTER 4 - Problem 4-2B (Burney Extra Credit)