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A tumor is injected with 10 grams of Iodine-125, which has a half-life of 76 days. Write an exponential model representing the amount of Iodine-125 remaining in the tumor after t days. Then use the formula to find the amount of Iodine-125 that would remain in the tumor after 20 days.

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Answer:

so you want to find the tumer after 20 days right

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