In the above figure, the Average Total Cost of producing 5 units of output is $ .

Suppose a firm is producing 80

units of output,

incurring a total cost of

If an increase in output from 8 to 12 teapots increases total cost from $1,100 to $1,200, the marginal cost of one of those 4 teapots is $  .

If the total product of three workers is 337 units and the total product of four workers is 353 

units, then the marginal

product of the fourth worker is 

A firm's total fixed cost is $190

. If total cost

is