Chapter 6.4, Problem 90E

Use Table 1 to evaluate all integrals involved in any solutions of Problems 71–94.

92. Politics. The number of voters (in thousands) in a metropoli- tan area is given approximately by

$\begin{array}{cc}f\left(t\right)=\frac{500}{2+3e^{-t}}& t\ge 0\end{array}$

where t is time in years. Find the average number of voters during the period from t = 0 to t = 10.