Crude oil imports to one country from another for 2009-2013 could be approximated by the following model wheretis time in years since the start of 2000.

I(t) =37t²+ 800t2,000thousand barrels per day (9t13)

According to the model, approximately when were oil imports to the country greatest? HINT [See Example 1.] (Round your answer to two decimal places.)

t=

How many barrels per day were imported at that time? (Round your answer to two significant digits.)

thousand barrels