A police officer drives out of the station to patrol the East/West Highway. The officer first travels miles east, then reverses direction and travels miles west to help with an accident. From there, the officer travels more miles west, then reverses direction and travels miles to help with traffic around a construction site. The trips are summarized in the table below. How many miles has the officer traveled? How many miles, and in which direction, must the officer travel to return to the station?