
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
Given the functions $f(x) = x + a$ and $g(x) = x + \frac{4}{x}$, if for every $x_1 \in [1, 3]$, there exists an $x_2 \in [1, 4]$ such that $f(x_1) \geq g(x_2)$, determine the range of the real number $a$.

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