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A tumor is injected with0.5 grams of Iodine-125, which has a decay rate of1.15% per day. Write an exponential model representing the amount of Iodine-125

A tumor is injected with0.5

grams of Iodine-125, which has a decay rate of1.15%

per day. Write an exponential model representing the amount of Iodine-125 remaining in the tumor aftert

days. Then use the formula to find the amount of Iodine-125 that would remain in the tumor after60

days.

I got the answer for the second part which is .2 grams but the first part keeps telling me I'm wrong.

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