we ask you to build three models:
A model with trend and multiplicative seasonality as we did in class for the Australian Expansion
One model with a non-linear trend (e.g., polynomial or exponential)
Any other custom models of your choice
Be critical of your models, of the assumptions you make. Be sure to interpret precisely all the relevant results that you obtain. Include the most relevant graph(s) and discuss the strengths and weaknesses of each model.