Safety regulations require that the time between airplane takeoffs (on the same runway) will be at least 3 minutes. When taking
off, the run time of an airplane on the runway is 33 seconds. Planes are on average waiting 6 minutes and 48 seconds for take-off. On average there are 16 planes taking off per hour. How many planes are either on the runway or waiting to take off? (Round your answer to 2 decimal places.)
In exercise 3 (2,6) means that x=2 and y=6 so you have to check that if this values of x and y satisfied the given equation, by showing that the left hand side = the right hand side ..