
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 volleyball is served from a height off a 60 feet high cliff with a downward initial speed and is affected by gravity, represented by the equation $h = 60 - 9t - 4.5t^2$, where $h$ is the height in feet and $t$ is the time in seconds after it is served. Determine the time in seconds when the volleyball reaches a height of 30 feet.

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