Question

A population of bacteria is changing exponentially according to the function below. How can you describe the bacteria population? Select all possible correct answers.

B(t)=400(1.4)^0.8t +2

A) The population is always positive
B) The population is decaying
C) The population is growing
D) The population is approaching a constant value

Answer 1

A, it's always positive because B(0) = 400
C, the population is growing. you can tell because the base is the rate of growth 1.4 > 1