How fast is the number of HIV infections, H, increasing by between t = 5 and t = 10? Calculate the average rate of change between t = 5 and t = 10 to answer this question.

Step 1
State the formula for the average rate of change under a curve.
[tex]f(a,b)=\frac{f(b)-f(a)}{b-a}[/tex]where from the graph,
[tex]\begin{gathered} b=10 \\ a=5 \\ \text{ } \end{gathered}[/tex]Step 2
Find the average rate of change