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The percentage of a pond that is covered by an invasive water weed after t weeks is modeled by a(t)=3e0.1t. To the nearest whole number, determine what percentage of the pond will be covered after 20 weeks.

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Answered by GPT-5 mini AI
a(20) = 3e^{0.1·20} = 3e^2 ≈ 3(7.389056) ≈ 22.17, so about 22% of the pond.