Final answer:
The time limit for Carlos to file a charge with the appropriate state agency is 300 days from the date of the alleged discriminatory occurrence.
Step-by-step explanation:
The time limit for Carlos to file a charge with the appropriate state agency is 300 days from the date of the alleged discriminatory occurrence. This time limit is set by the Age Discrimination in Employment Act of 1967, which protects individuals from age discrimination in employment. Carlos should make sure to file the charge within the given time limit to preserve his rights and potential legal recourse.