A data model can : A. Illustrate return-on-investment, break-even point, and economic feasibility B. Represent actions or processes that occur in the to-be system C. Be used as a logical data model in analysis and as a physical data model in design D. Only be used in BPR situations E. Only be used with JAD sessions

An increase in the market price of men's haircuts, from $16 per haircut to $26 per haircut, initially causes a local barbershop to have its employees work overtime to increase the number of daily haircuts provided from 20 to 25. when the $26 market price remains unchanged for several weeks and all other things remain equal as well, the barbershop hires additional employees and provides 40 haircuts per day. what is the short-run price elasticity of supply? nothing (your answer should have two decimal places.) what is the long-run price elasticity of supply? nothing (your answer should have two decimal places.)