
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
A certain city started to vigorously develop its tourism industry in the year $2020$. According to statistics, the city's tourism revenue was approximately $2$ billion yuan in $2020$. It is estimated that the tourism revenue will reach around $2.88$ billion yuan in $2022$. Let $x$ be the annual average growth rate of the city's tourism revenue. Write down the equation based on the given information as ____.

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