
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
A shop sells 9 pencils and 11 notebooks for $\mathdollar 6.05$. It also sells 6 pencils and 4 notebooks for $\mathdollar 2.68$. Determine the cost of 18 pencils and 13 notebooks.

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