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