Question

A science experiment begins with a bacterial population of 12. After 1 hour, the population is 18. After 2 hours, the population is 27. Which best describes the relationship between the time, in hours, and the population of the bacteria? What is the y-intercept of the function? What is the rate of change of the function?

Answer 1

Answer:

the first one is "exponential"

then "12"

the last one is "multiply 1.5"

Answer 2

So it starts with 12 in the bacterial population. After 1 hour, 6 are added. After another hour passed, 9 are added. 12/1, 18/6, 27/9.