B. Deveney likes to take time off from playing to research rare cellular structures. Last summer, she discovered a previously unknown cell and created 5kg of a rare substance. After making some...

Extracted text: B. Deveney likes to take time off from playing to research rare cellular structures. Last summer, she discovered a previously unknown cell and created 5kg of a rare substance. After making some observations, she determined this new cell decays exponentially and has a half-life of 2 days. a. Write an equation that related the remaining amount of the rare molecule a(t) to time t. b. After how many days will Deveney have only -kg left? c. When she returns to the lab, her sample will be 30 days old. How much will be remaining?