
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 $p$: A real number $x$ satisfies $(x-a)(x-3a) < 0$, where $a < 0$, and $q$: A real number $x$ satisfies $2^{3x+1} > 2^{-x-7}$, and $p$ is a sufficient condition for $q$, find the range of values for $a$.

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