Most pharmaceutical firms selling prescription drugs continue to earn economic profits long after the patents on the prescription drugs expire because they have established a strong foothold in the market

Tony's Pizza's production function is shown in the table above. a) Suppose Tony operates Plant 2. He hires 2 workers and produces 20 pizzas a day. Is the pizzeria technologically efficient? Why or why not? b) Suppose Tony operates Plant 1

He hires 2 workers and produces 18 pizzas per day. Is Tony's Pizza technologically efficient? Why or why not? Can Tony increase production to 22 pizzas a day in the short run? If yes, how? c) Suppose Tony operates Plant 3. What is the marginal product of labor when the fourth worker is hired? When operating Plant 3, does Tony experience diminishing marginal returns? Explain. d) Suppose Tony currently uses Plant 3. Can he increase production from 40 to 50 pizzas per day in the short run? In the long run? If yes, how?

Why might a country like Brazil have to offer a much higher interest rate on its government bonds than those offered by the Great Britain?

What will be an ideal response?