At 3:00 p.m., a bank robber is spotted driving north on I-15 at milepost 126. His speed

Question:

At 3:00 p.m., a bank robber is spotted driving north on I-15 at milepost 126. His speed is 112.0 mi/h. At 3:37 p.m., he is spotted at milepost 185 doing 105.0 mi/h.
During this time interval, what are the bank robber's displacement, average velocity, and average acceleration? (Assume a straight highway.)