
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
In 1970, there were 480,000 cases of measles reported in the U.S. By 2000, the number had decreased to 600 cases reported. How many cases of measles would have been reported in 1990 if the number of cases decreased linearly from 1970 to 2000?

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