Suppose you buy 2,500 shares of Microsoft at $20 per share and 3,500 shares of Pepsi at $35 per share. If Microsoft's stock goes up to $30 per share and Pepsi stock falls to $30 per share and neither paid dividends. a. What is the new value of the portfolio? What return did the portfolio earn?
c. If you don't buy or sell any shares after the price change, what are the new portfolio weights?

Power plants that rely on coal increase the amount of sulfur dioxide that dissolves into the air, eventually increasing the acidity of precipitation. the higher acidity of rain and snow can damage forests by making it more difficult for plants to absorb minerals from the soil. the equations below provide information about the market demand and supply of electricity. there is a constant marginal external cost of $25 per unit of electricity.d: qd= 200 – 2ps: qs=p – 10what quantity of electricity satisfies allocative efficiency in this market? a. 60b. 70c. 50d. 43.3