phoenix is approximately 310 miles from los angeles, a 6-hour drive at speed limits permitted on the freeways connecting the two cities. if he drives from phoenix to los angeles, crane would need to leave the afternoon of may 31 and would be reimbursed $0.50 per mile. he would need to spend 2 nights in a hotel, the night of may 31 and the night of june 1. he would return to phoenix by car on june 2. the hotel used by the team charges $170 per night. what is the incremental cost of driving over flying?