Question

a radioactive atom decays at a rate of 35% each day. If the original weight of the atom is 7500 milligrams, how much will it weigh after 10 days?

Answer 1

A=7,500×(1−0.35)^(10)
A=100.97
This is the answer. You get it by plugging in the numbers into the exponential decay formula Amount=a(1-b)^t where t is time, a is initial amount, and b is decay rate.

Answer 2

A=7,500×(1−0.35)^(10)
A=100.97