JetBlue revenue in 2002 was $635.2 million. By 2009, revenue had increased to $3,290.0 million. What is the geometric mean annual increase for the period? Solution let a= 635.2 after7 years revenue is 3290 hence 3290=635.2*r7 r=1.265 means each years revenue increased 1.265 times the revenue of previous year.