the half-life of a particular radioactive substance is 3 months. if you started with 50 grams of this…

the half-life of a particular radioactive substance is 3 months. if you started with 50 grams of this substance, how much of it would remain after 12 months?\nremaining amount = $50(1 - ?)^{\\square}$\nremaining amount = $i(1 - r)^t$\nenter the number that belongs in the green box.
Answer
Answer:
0.5 4 3.125 grams