
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
The Tianfu Greenway is a popular check-in spot for the people of Chengdu. According to statistics, there is a linear relationship between the number of tourists on the Tianfu Greenway, denoted as $x$ (in units of 10,000 people), and the economic income of the surrounding businesses, denoted as $y$ (in units of 10,000 yuan). It is known that the regression line equation is $\hat{y}=12.6x+0.6$. The statistics of the number of tourists on the Tianfu Greenway and the economic income of the surrounding businesses for the past five months are shown in the table below:

| $x$ | 2   | 3   | 3.5 | 4.5 | 7   |
|-----|-----|-----|-----|-----|-----|
| $y$ | 26  | 38  | 43  | 60  | $a$ |

The value of $a$ in the table is ______.

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