
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 original price of a new model of mobile phone is $a$ yuan. In the next $m$ months, the price decreases by $p\%$ on average every month. The function expression of the price $y$ yuan as a function of the number of months $x$ is: \_\_\_\_\_\_.

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