
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
Infants born between $1$ to $6$ months grow very quickly. The relationship between their weight $y$ (in grams) and their age in months $x$ can be represented by $y=a+700x$, where $a$ is the weight of the infant at birth. If an infant's weight at birth is $3000$ grams, then the weight of this infant in the $4$th month is ____ grams.

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