2. The Deming PDCA Cycle is a key tool in lean process improvement. Why is it presented in the shape of a wheel and what does this say about the nature of lean process improvement? (2 pts 1 to 2 sentences) 3. Agile Development has largely replaced SDLC in modern systems development. Describe two key advantages of Agile over SDLC. 4. List 3 characteristics that would allow you to determine whether a factory was organized as a job shop or an assembly line. 5. A fabrication company wants to enter a new business line by adding a new machine. The firm is considering proposals from vendor A and vendor B. The fixed costs for machine A are $90,000 and for machine B, $75,000. The variable cost for A is $15.00 per unit and for B, $18.00. The price of the product processed on these machines is $21 per unit. If the company does not expect to sell more than 5000 units, which machine (if any) should be purchased and why? show you calculations, plus a sentence explaining your