18.
The marginal product of labor can be defined as the change in
a.
profit divided by the change in labor.
b.
output divided by the change in labor.
c.
labor divided by the change in output.
d.
labor divided by the change in total cost.
19.
The marginal product of an input in the production process is the increase in
a.
total revenue obtained from an additional unit of that input.
b.
profit obtained from an additional unit of that input.
c.
total revenue obtained from an additional unit of that input.
d.
quantity of output obtained from an additional unit of that input.
20.
When a firm’s only variable input is labor, then the slope of the production function measures the
a.
quantity of labor.
b.
quantity of output.
c.
total cost.
d.
marginal product of labor.