Which of the following is true? A. In Bertrand oligopoly each firm reacts optimally to price changes.
B. In Cournot oligopoly firms engage in quantity competition.
C. In Sweezy oligopoly a change in marginal cost may not have an effect on output or
price.
D. All of the statements associated with this question are correct.

How is a proportional tax different from a progressive tax? a. a proportional tax decreases with income level, but a progressive tax increases with income level. b. a proportional tax increases with income level, but a progressive tax decreases with income level. c. a proportional tax increases with income level, but a progressive tax is the same percentage for all. d. a proportional tax is the same percentage for all, but a progressive tax increases with income level.

Need with my trade theory homework. i doubt what i wrote was right.consider a monopolistically competitive market for soft drinks in which n symmetric firms face the following demand function: q=s(1/n-b(p-(p with the straight line on which implies the marginal revenue functionmr=p-(q/sb)finally, suppose firms face the total cost functiontc=900,000+100qsuppose the market size, s, is 27,000,000, and the elasticity parameter b is 0.003.diagram the price and the average total cost in the market as a function of the number of firms. what are the equations for each curve, and why does each curve slope up or down? label the equilibrium number of firms and the equilibrium price in the diagram. why is this the equilibrium?

Burberry is pursuing a focused differentiation strategy aimed at high-end luxury customers. however, the company is also employing a segmentation strategy to separate customers within that focus. the strategy offers items at an entry-level price point for customers who desire to be like celebrities such as sarah jessica parker as well as couture items for those richest and celebrity customers. what strategy is burberry pursuing?