A tumor is injected with0.72

grams of Iodine-125. After 1 day, the amount of Iodine-125 has decreased by1.15%

.

Write an exponential decay model withA(t)

representing the amount of Iodine-125 remaining in the tumor aftert

days. Enclose arguments of the function in parentheses and include a multiplication sign between terms. For example,c*ln(t)

.

Then use the formula forA(t)

to find the amount of Iodine-125 that would remain in the tumor after8.5

days. Round your answer to the nearest thousandth (3 decimal places) of a gram.