Crude oil imports to one country from another for 2009-2013 could be approximated by the following model where t is time in years since the start of 2000. I(t) = -332 + 800t - 3,000 thousand barrels per day (9 stS 13) According to the model, approximately when were oil imports to the country greatest? HINT [See Example 1.] (Round your answer to two decimal places.) How many barrels per day were imported at that time? (Round your answer to two significant digits.) thousand barrels

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A: The solution of above question no. #30 is written below with graph.

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Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as: