Trent and Chris are musicians, and they recently played a concert for 20,000 fans. The rectangular venue measured 87 yards by 57 yards. What was the approximate population density of the fans?
\(Area=87\times57=4959 \ yard^2 \\ \\ \rightarrow 20.000 \ fans \\ \\ \frac{20.000}{4959} \approx 4 \ fans \ per \ yard^2\)