How is the aggregate supply curve affected by

(a) minimum wage laws
(b) social security payroll taxes
(c) social security retirement benefits and
(d) tighter border security?

Suppose you hold a portfolio consisting of a $10,000 investment in each of 8 different common stocks. the portfolio's beta is 1.25. now suppose you decided to sell one of your stocks that has a beta of 1.00 and to use the proceeds to buy a replacement stock with a beta of 1.55. what would the portfolio's new beta be? do not round your intermediate calculations.