
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
With the increasing environmental awareness of citizens, the sales of fireworks and firecrackers during the Spring Festival have been decreasing year by year. In a certain city, the sales of fireworks and firecrackers were 200,000 boxes in 2017, and decreased to 98,000 boxes in 2019.
(1) Calculate the average annual decrease rate of fireworks and firecrackers sales in the city from 2017 to 2019.
(2) Predict the sales volume of fireworks and firecrackers during the Spring Festival in the city in 2020.

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