What effect would each of the following have on a firm’s short-run marginal cost curve and its…

What pi would each of the aftercited own on a firm's short-run marginal absorb incurvation and its unroving absorb incurvation?

  1. An growth in the wage rate

  2. A curtail in possessions taxes

  3. A melt in the alienation figure of new capital

  4. A melt in life figures