A municipal wastewater treatment plant employs two circular primary clarifiers arranged in parallel, following the bar screen and grit removal chamber. The plant receives 10 MGD. Each clarifier is center-fed (water enters at the center and exists at the perimeter). The clarifier radius is 50 ft and depth is 22 ft. What is the detention time (in hr) in each clarifier

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.