On December 31, there were 31 units remaining in ending inventory. These 31 units consisted of 3 from January, 5 from February, 7 from May, 5 from September, and 11 from November. Using the specific identification method, what is the cost of the ending inventory?

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.)