An investment club has set a goal of earning 15% on the money it invests in stocks. The members are considering purchasing three possible stocks, with t Let x= computer shares, y= utility shares, and z w retail shares.) (a) If they have $392,000 to invest, how many shares of each stock should they buy to meet their goal? (If there are infinitely many solutions, ex) (x,y,z)=() (b) If they buy 1200 shares of retail stock, how many shares of the other stocks should they buy? computer shares utility shares What if they buy 2400 shares of retail stock? computer shares utility shares (c) What is the minimum number of shares of computer stock they should buy? shares What is the number of shares of the other stocks in this case? utility shares retall shares (d) What is the maximum number of shares of computer stock they should purchase? shares What is the number of shares of the other stocks in this case? utility shares retail shares