A tumor is injected with 0.9 grams of Iodine-125, which has a decay rate of 1.15% per day. 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 60 days.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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A tumor is injected with 0.9 grams of Iodine-125, which has a decay rate of 1.15% per day. 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 60 days.
Enter the exact answer.
Enclose arguments of functions in parentheses and include a multiplication sign between terms. For
example, c * exp (h) or c *
In (h).
a
ab
sin (a)
Ω
a
A (t) =
Round to the nearest tenth of a gram.
There will be Number
grams of Iodine-125 after 60 days.
Transcribed Image Text:A tumor is injected with 0.9 grams of Iodine-125, which has a decay rate of 1.15% per day. 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 60 days. Enter the exact answer. Enclose arguments of functions in parentheses and include a multiplication sign between terms. For example, c * exp (h) or c * In (h). a ab sin (a) Ω a A (t) = Round to the nearest tenth of a gram. There will be Number grams of Iodine-125 after 60 days.
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