Dubnium-270 has a half life of 1 day. This means the amount of Dubnium-270 in a sample decreases by 50% every 1 day. A sample initially has 10 picograms of Dubnium-270.
A) Write a function modeling how much Dubnium-270 remains in the sample after 𝑡 days.
B) Write a function modeling how much Dubnium-270 remains in the sample after 𝑡 hours.
C) Write a function modeling how much Dubnium-270 remains in the sample after 𝑡 weeks.