Carla will be renting a car to visit job sites in the Pacific Northwest over a 2-week period. The car can be rented for $198 per week with 100 miles per day or for $218 per week with unlimited miles. If extra miles are charged at 25¢ per mile, what is the minimum mileage per day that she must spend visiting job sites to justify paying the higher rate? How many miles is this over the 2 weeks? (Answer: 111 miles per day)