
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
Niki uses a new version of her mobile phone which has different battery lifespans. If the phone is not in use, the battery lasts for 30 hours. If Niki is actively using her phone, the battery drains in 4 hours. Since her last charge, the phone has been on for 12 hours and she actively used it for 1 hour and 30 minutes. If she now stops using it but leaves it on, how many more hours will the battery last?
A) 7 hours
B) 8 hours
C) 8.25 hours
D) 9 hours

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