The state of Oregon has a population of 20 people per square mile. A county in Oregon measures 25 miles by 30 miles. What is the expected population of the county?
If we just find the area of the county, then we'll know it's expected population.
Assuming it's a perfect rectangle, then the county will have an area of \(25*30=750\) square miles.
Because there is an expected population of 20 people per square mile, the expected population is \(750*20=\boxed{15000}\) people in the county
