
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 that two places, A and B, are 150 kilometers apart, a person drives a car from A to B at a speed of 60 kilometers per hour, stays at B for 1 hour, and then returns to A at a speed of 50 kilometers per hour. Express the distance x that the car is away from A as a function of time t (in hours).

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