
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
If the fiscal revenue $x$ and expenditure $y$ of a certain region satisfy the linear regression equation $y = a + bx + \epsilon$ (unit: billion yuan), where $b = 0.8$, $a = 2$, and $|\epsilon| \leq 0.5$. If this year's fiscal revenue of the region is 10 billion yuan, the annual expenditure is expected not to exceed \_\_\_\_\_ billion yuan.

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