
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
An investor placed $\$8,\!000$ in a four-month savings certificate that paid a simple annual interest rate of $10\%$. After four months, she reinvested the total amount from the certificate into another four-month savings certificate. After four more months, her investment totaled $\$8,\!840$. What was the annual interest rate of the second certificate, denoted as $s\%$?

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