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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)=3e0.15t. 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^{0.15·20} = 3e^{3} ≈ 3 · 20.0855 = 60.2566, so about 60% of the pond (to the nearest whole number).