1.why the Marginal Revenue Product of the Labour curve for a firm that competes for labor in the factor market is also the firm's demand curve for labor?

2.how firms use the implement the "least-cost" principle to determine the quantities of labor and capital that they will employ?

3.why does the wealthy segment of society have a natural advantage in swaying public policy?

4.Outline and elaborate upon any one of the policies that Oxfam suggests the global community could work towards to improve inequality.

Short answer with explanation.