Axxel Car Rentals has two basic plans. One is to rent a car for $19 per day and then pay .20 per mile. The second plan is to rent a car for $49 for the first day, and then pay $29 for each subsequent day with unlimited mileage. Figaro is going to rent a car, and he knows that he is going to drive it 500 miles. However, he does not know how long it will take him to travel the 500 miles because of the work he has to do on his trip. (He might need if for two days, but he could need it for much longer than that.) At what number of days do the two plans have the same cost? ​