Complete questions 1, 2 and 3. Please show your work. Plageriasm freeNeed by 9:00 p.m. Friday, September 61.  A hospital emergency room averages 50 patients per shift.  A shift is 8 hours long, and the average patient requires 20 minutes in the exam room.a.  How many exam rooms should the hospital have if it wishes to maintain a 30 percent capacity cushion?b.  Discuss whether you think a 30 percent capacity cushion is appropriate for a hospital emergency room.  What factors would you consider when setting this cushion?2.  A fast-food restaurant averages 150 customers per hour.  The average processing time per customer is 90 seconds.a. Determine how many cash registers the restaurant should have if it wishes to maintain a 10 percent capacity cushion.b.  Discuss whether you think a 10 percent capacity cushion is appropriate for a fas-food restaurant.  What factors would you consider when setting this cushion?3.  A university has demand for 10,000 classroom seats per day (one student in one class is a classroom seat).  All classrooms have t0 seats, and the day is considered to be 10 hours long for scheduling purposes.  Each class takes 1 hour.  Determine the number of classrooms required if the university seeks to maintain a 20 percent capacity cushion.