
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In recent years, a certain county has increased its investment in education funds. In 2014, they invested 2500 million yuan, and in 2016, they invested 3500 million yuan. Assuming that the county's annual average growth rate of education funds investment is x, an equation can be established based on the given information.

Present the answer in LaTex format: \boxed{Your answer}
user