Crayfish are sometimes used as live bait by fisherman. After a day of fishing, a fisherman let go 5 unused crayfishes in a lake. A year later, the population of crayfish has grown to 15. Assuming that the population is growing exponentially, how many crayfishes can one expect after 4 years? Round your answer to the closest full number

The logistic model incorporates carrying capacity to make the model exponential

https://media.hhmi.org/biointeractive/click/lionfish-invasion/introduction.html This section starts explaining how scientists use the population survey data that are collected to model how the lionfish population changes over time. These models enable scientists to make predictions about population changes, which is an important element of developing plans for managing the lionfish population You'll be using the discrete-time logistic model that is described on this page in future parts of the case study, so make sure to carefully read through the explanation of this mathematical model. Even if you don't have a strong math background, this case study walks through the equation step by step.   6)Which of the following are constant terms in the discrete-time logistic model? choose all that apply a)Nt b)ΔN c)t d)K e)Δt f)rmax,d g)None of these

You start a lab colony of Rotifers (small aquatic animals) by adding 4 indviduals to asmall tank. One week later the population has grown to 12. Assuming that thepopulation is growing exponentially, how many rotifers can you expect after 5weeks? Round your answer to the closest full number.