Water flowed out of a tank at a steady rate. A total of 18 and one-half gallons flowed out of the tank in 4 and one-fourth hours. Which expression determines the quantity of water leaving the tank per hour? StartFraction 17 over 4 EndFraction divided by StartFraction 36 over 2 EndFraction StartFraction 36 over 2 EndFraction divided by StartFraction 17 over 4 EndFraction StartFraction 17 over 4 EndFraction divided by StartFraction 37 over 2 EndFraction StartFraction 37 over 2 EndFraction divided by StartFraction 17 over 4 EndFraction