The three firms below have five choices for pollution control: no controls or four different technologies,W,X,Y and Z.The amount of pollution emitted and the cost of the technologies are shown in the table. 
-Refer to the information above.Suppose that the government imposes a tax of $1400 per ton of pollution.As a result,pollution emissions are __________ tons and the total private cost is __________.
Definitions:
Long-Run Cost Function
An economic model that describes how production costs change over time as all inputs can be varied by the producer.
Marginal Cost Function
A mathematical relationship describing how the cost of producing one additional unit of output varies as production scale changes.
Optimal Output
The level of production that maximizes a firm's profit, where marginal revenue equals marginal cost.
Producer Surplus
Producer surplus is the difference between what producers are willing to accept for a good or service versus what they actually receive, reflecting gains from trade.
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