''if there are diminishing returns, the marginal cost curve must be positively sloped '' is true or fall, why?

Which of the following statements is true? a job costing system will have a separate work in process account for each of the major processes. a process costing system will have a single work in process account. a process costing system will have a separate raw materials account for each of the major processes. a process costing system will have a separate work in process account for each of the major processes.

Suppose that electricity producers create a negative externality equal to $5 per unit. further suppose that the government imposes a $5 per-unit tax on the producers. what is the relationship between the after-tax equilibrium quantity and the socially optimal quantity of electricity to be produced?

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.)