2. A construction company has built 30 houses so far
this year at a total cost to the company of $7.5 million.
If the company builds a 31st house, its total cost will
increase to $7.76 million. Which of the following
statements is correct?
a. For the first 30 houses, the average cost per house was
$250,000.
b. The marginal cost of the 31st house, if it is built, will be $
260,000.
c. If the company can experience a marginal benefit of
$275,000 by building the 31st house, then the company
should build it.
d. All of the above are correct