College Basketball: Women The following chart shows the number of NCAA women's college basketball teams in the United States for various years since $2000 .{ }^{35}$
a. On average, how fast was the number of women's college basketball teams growing over the three-year period beginning in $2004 ?$
b. By inspecting the graph, find the three-year period over which the average rate of change was largest. HINT [See Example 2.]