Solution: (1) suppose that the average annual growth rate of junior high school students' education investment in this city from 2008 to 20 10 is x, according to the meaning of the question: 6000( 1+x) 2 =7260,
Simplification: (1+x) 2 =,
That is 1+x=, or 1+x =,
Solution: x1= 0.1=10%, X2 =-2. 1 (excluding).
A: From 2008 to 20 10, the average annual growth rate of junior high school students' education investment was 10%.