At clock time t = 13 years the population of a certain organism in an ecosystem is 68, in thousands, while at clock time a years the population is 38 thousand. Plot the corresponding points on a graph of population vs. clock time and determine the slope of the straight line segment connecting these points. Explain why this slope represents the rate at which the population changes over this time interval.
For the exponential function y = f(t) = 102 * 1.018t, determine the average rate of change of y with respect to t, between clock times t = 28 and t = 29.