34. A graph of the inequalities shows the vertices to be
... b. (0, 0), (8, 0), (4, 8), (0, 8)
35. The hospital makes $140 per hour for follow-ups and $120 per hour for first-time visits. To maximize revenue, the receptionist should schedule as many follow-ups as possible, then the remaining time in first-time visits. That is
... d. 4 first visits and 8 follow-ups