Please answer questions 7.4 ,7.5 ,7.6

In 1970, Wal-Mart offered 300.000 shares of its common stock to the public at a price of $16.50 per share. Since that time. Wal-Mart has had 11 two-for-one stock splits. On a purchase of 100 shares at $16.50 per share on the company's first offering, the number of shares has grown to 204.800 shares worth $15, 767, 500 in July 2014. What is the return on investment for investors who purchased the stock in 1970 (over a 44-year ownership period)? Assume that no dividends were received during that period. Johnson Controls spent more than $2.5 million retrofitting a government complex and installing a computerized energy-management system for the State of Massachusetts. As a result, the stale's energy bill dropped from an average of $6 million a year to $3.5 million. Moreover, both parties will benefit from the 10-year life of the contract. Johnson recovers half the money it saved in reduced utility costs (about $1.2 million a year over 10 years): Massachusetts has more money to spend on other things. What is the rate of return realized by Johnson Controls in this energy-control system? Suppose that you invest $50,000 in a restaurant business. One year later, you sell half of this business to a partner for $100,000. Then a year later, the business is in the red. and you have to pay $40,000 to close the business. What is the rate of return on your investment from this restaurant business? As a rule of thumb. 8% annualized net return over a minimum holding period of five years is a realistic figure. Pablo Picasso's 1905 portrait Boy with a Pipe sold for $104.2 million in an auction at Sotheby's Holdings. Inc.. on June 24. 2004. shattering the existing record for art and ushering in a new era in pricing for 20th-century paintings. The Picasso, sold by the philanthropic Greentree Foundation. cost Mr. Whitney about $30,000 in 1950. Determine the annual rate of appreciation of the artwork over 54 years. Is this a good investment? Consider four investments with the sequences of