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A 12-sided solid has faces numbered 1 to 12. The table shows the results of rolling the solid 200 times. Find the experimental probability of rolling a number greater than 10. Simplify your answer.

The air in a room with volume 180 m3 contains 0.1% carbon dioxide initially. Fresher air with only 0.05% carbon dioxide flows into the room at a rate of 2 m3/min and the mixed air flows out at the same rate.

Find the percentage of carbon dioxide in the room as a function of time t (in minutes).
p(t) =

1

Incorrect: Your answer is incorrect.

What happens with the percentage of carbon dioxide in the room in the long run?

lim t → ∞ p(t) = 2[removed] Correct: Your answer is correct. %
Mat

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