
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 population size (in number of animals) of a certain animal species is given by the equation $y=a\log_{2}(x+1)$. Suppose that the population size of this animal species in the first year was 100 animals. What will be the population size in the 15th year.

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