9. The number of farms in Canada has been declining steadily over the years 25 years. Ac cording to census (http : //www. omafra . gov . on . ca/english/stats/censusumber. htm, in British Columbia in 1996 there were 213835 farms and in 2016 that number has decreased to 17,528 farms. In this problem} we will assume the number of farms has decreased ac cording to the exponential decay model. (a) Find the value of decay constant k and write down the exponential function that describes the number of farms after time t: in years after 1996. (b) According to your model, at what rate is the number of farms decreasing in 2016? (e) \\Nhat does the number you found in part b) represent on the graph of the model