A company determines that its marginal revenue (in dollars per day) is given by m the company's marginal cost (in dollars per day) is given by find the total profit from to (the first 6 days).

The correct answer is b, social stratification is needed for a society to exist. marxist theory regarding social stratification is that due to the differing economic capacities among people in society, a natural separation occurs between those that own the means of production and those that sell their labour in the production chain. 

3. manufacturing institutions, because capitalists  are about making money.