Exponential growth functions increase at an increasing rate. We can observe this by calculating the average rate of change on different intervals of the function. [You may want to refer to Section 2.4 to review average rate of change].
Exponential growth functions increase at an increasing rate. We can observe this by calculating the average rate of change on different intervals of the function. [You may want to refer to Section 2.4 to review average rate of change]. The graph models healthcare spending by the U.S. Government. Estimating from the graph, it would appear the y -value is 1580 in 2016, 790 in 2006, and 400 in 1996. We first calculate the slope of the straight line that would connect the points (1996,400) and (2006,790). (790 - 400)/(2006 - 1996) = 390/10 = 39 billion dollars per year. Now the slope of the straight line that would connect the points (2016,1580) and (2006,790). (1580 - 790)/(2016 - 2006) = 790/10 = 79 billion dollars per year. These are average annual rates of change . The average annual increase in health care expense went from $39 billion per year on the interval (1996,2006) to $79 billion per year on the interval (2006,2016). ...