3 A doctor se and 12 patients each day On Mondays and Tuesdays the appointment times are 15 minutes On Wednesdays and Thursdays they are 30 minutes On Fridays they are one hour long The doctor works for no more than 8 hours a day Here are some inequalities that represent this situation 0 25 y 1 7 x 12 xy 8 What does each variable represent Y X What does the expression x y in the last inequality mean in this sit E