Assume that marginal revenue equals rising marginal cost at 100 units of output.
at this output level, a firm's total fixed cost is $400 and its total variable cost is $600. if the price of the product is $3 per unit and the firm produces at its optimal level, the firm will earn an economic profit equal to
a) -$600.
b) -$700.
c) $200.
d) -$1,000.
e) -$400.

b) -$700.

Explanation:

The economic profit or loss will be:

economic result = revenue - total cost

Where:

fixed cost + variable cost = total cost

400 + 600 = 1,000

revenue = units x selling price per unit

100 units x $3 = $300

economic result = revenue - total cost = 300 - 1,000 = -700

The company is on the optimal level, marginal revenue = marginal cost at 100 units of output.

But, it is not selling at the correct price. It should sale at a higher price.

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.