Online Ads The figure shows the percent of U.S. Internet users between 2005 and 2009...

Online Ads The figure shows the percent of U.S. Internet users between 2005 and 2009 who have ever gone to an online classified advertising site.

a. Sketch a secant line between the points where x = 0 and x = 2. Find and interpret in context the slope of this secant line.

b. Sketch the tangent line at point A and estimate its slope.

c. Use derivative notation to express the slope of the graph at A.

d. Write a sentence interpreting the rate of change at x = 3.