Warren Buffetts company went public in 1965. The public offering price was $16 per share. The stock was traded at $94,500 on April 10, 2013, and the market value of the firm was $95.4 billion.

a) What is the firms average annual compound growth rate over the last 48 years?

b) If Mr. Buffetts company continues to grow at an historical growth rate, what will be his companys total market value when he reaches the age of 100? (Buffett celebrated his 78th birthday in 2009)