This Maplet plots an exponential function of the form f(t) = C*exp(k*t), which is a solution to the differential equation y' = k* y. This models unrestricted growth (if k>0, or decay if k<0), where the rate of growth is proportional to the amount present. There are two plotting options. Option 1 lets you directly enter the initial value C and the growth (or decay) constant k. Option 2 lets you enter a list of data points, and then choose two of the points (eg the 2nd and the 5th), which the Maplet will then use to solve for C and k. The values of C and k appear below the plot. In Option 2, it is important that the data points be entered as a list of pairs in brackets (the bracketed pairs are the data points), e.g [[0, 1.5], [2, 4.24], [2.8, 9.5]]. The two check boxes under the plot toggle the function and data points on and off. This only works if Option 2 is selected.