To avoid drowsiness and complaints of stale air, the amount of carbon dioxide (CO2) in a workplace must not be greater than 1,000 parts per million (ppm). How would you write an inequality to show the amount of (CO2) in parts per million that would cause drowsiness and complaints of stale air?

The inequality to represent the given scenario would be:

CO2 ≤ 1000 ppm

This means that the amount of CO2 in a workplace should be less than or equal to 1000 parts per million to avoid drowsiness and complaints of stale air.