Question

Which of the following are examples of exponential decay?

- The population of a Florida is increasing by 43% each year.
- The pesticide DDT has a half-life of 15 years.
- March Madness has 64 teams in the bracket. Each round, half the teams are eliminated.
- After an antibiotic is added to a culture of bacteria, the number of bacteria is reduced by half every three hours.
- A tree frog population doubles every three weeks.

Answer 1

Answer: the correct ones are

B “ The pesticide DDT has a half live of 15 years”

C “March madness has 64 teams in the bracket. Each round, half the teams are eliminated” and

D “After an antibiotic is added to a culture of bacteria, the number of bacteria is reduced by half every three hours”

Answer 2

The correct answer for the question that is being presented above is this one: "- The pesticide DDT has a half-life of 15 years; - March Madness has 64 teams in the bracket. Each round, half the teams are eliminated; - After an antibiotic is added to a culture of bacteria, the number of bacteria is reduced by half every three hours."