The table below shows the relationship between the number of teachers and students going on a field trip. how can the relationship between teachers and students be shown using an equation? teachers 2 3 4 5 students 34 51 68 85

The life, in years, of a certain type of electrical switch has an exponential distribution with an average life b = 2. if 100 of these switches are installed in dif- ferent systems, what is the probability that at most 30 fail during the first year?