# Calculus

after t months on the job a postal clerk cn sort Q(t)=700-400e^-0.5t letters per hour. Wht is the average rate at which the clerk sorts mail during the first 3 months on the job.

What is the average rte t which the clerk sorts mail during the first 3 months on the job?

What is the average rate during the next 3 months?

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