What is the market called that facilitates the sale of shares between individual investors?

On february 3, smart company sold merchandise in the amount of $5,800 to truman company, with credit terms of 2/10, n/30. the cost of the items sold is $4,000. smart uses the perpetual inventory system and the gross method. truman pays the invoice on february 8, and takes the appropriate discount. the journal entry that smart makes on february 8 is:

while setting up his new office, an attorney ordered thick, frieze carpets for the floor. however, the building inspector had him remove the expensive carpeting. the building inspector stated that according to federal regulations, the office must be wheelchair accessible as it is a public area. he further explained that since wheelchairs do not maneuver well in thick, frieze carpeting, the carpets had to be removed and be replaced with smooth-textured carpets that do not restrict wheelchair maneuverability. this scenario illustrates how a company is influenced by the component of its specific environment.

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.