After observing arrivals and departures at a highway toll booth over a 60-minute time period, an observer notes the arrival rate is given by the function (t) = 2.2 + 0.17t- 0.0032t and a departure rate given by u(t) = 1.2 + 0.07t. Assuming units in vehicles per minute, determine the total vehicle delay at the toll booth and the maximum queue length, assuming D/D/1 queuing