How would you interpret (1) an upward sloping curve and (2) a zero slope curve in a two variable diagram?How does the United States differ from the European Union in how it balances the competing...

How would you interpret (1) an upward sloping curve and (2) a zero slope curve in a two variable diagram?How does the United States differ from the European Union in how it balances the competing claims of equality and efficiency?Suppose demand can be described with the equation Q = 900 – 5P and supply with the equation Q = 100 + 5P.a.Determine the equilibrium price and quantity.b.Determine the surplus or shortage if the price were $100.