1. Please define both "disruptive technology" and "sustaining technology". Then besides the examples in the article, provide other examples of products that were created with the use of disruptive technology and provide other examples of products that were created with the use of sustaining technology.
2. Of the three methods of estimating costs (regression, account analysis, and engineer method), which method would you prefer to use? Please explain why. Which method do you feel would be most accurate?
3. Explain how both fixed costs and variable costs can change from the short run to the long run.