Suppose there are three power-generating plants, each of which has access to 5 different production processes. The table below summarizes the cost of each production process and the corresponding number of tons of smoke emitted each. 
It would cost Firm X ________ to reduce emissions by one ton if it currently emits 3 tons, and ________ to reduce emissions by one ton if it currently emits 2 tons.
Definitions:
MRP of Land
The marginal revenue product of land refers to the additional revenue earned from the use of an extra unit of land, holding other factors constant.
Marginal Revenue Product
The additional revenue generated from employing one more unit of a resource, such as labor or capital.
Marginal Physical Product
The additional output that is produced by employing one more unit of an input, holding other inputs constant.
Substitution Effect
The economic understanding that as prices rise, or income decreases, consumers will replace more expensive items with less costly alternatives.
Q41: In which of the following markets is
Q59: The marginal benefit of additional information:<br>A)rises as
Q61: Gino's Pizza shop hires workers in
Q63: There are 20 residents in the village
Q85: The fact that people sometimes regret having
Q87: The optimal number of workers for a
Q114: If either the production or consumption of
Q122: Alex, who is risk-neutral, is looking for
Q134: Even if a tax imposed in a
Q137: If the market equilibrium quantity is greater