Ryan will rent a car fot the weekend. he can choose one of the two plans. The first plan has an intial fee of $51 and cost an additional $0.13 per mile driven. The second plan has a initial fee of $40 and costs an additional $0.18 per mile driven
51+ 0.13• miles driven (plan 1) 40+ 0.18• miles driven (plan 2)
If you drive 1 mile than plan 2 is better 51+ 0.13= 51.13 40+0.18= 40.18
The difference between the two initial fees is 51-40 = $11 With each mile driven plan 2 closes the difference gap by 0.18-0.13= $0.05 So after 11/0.05= 220 miles the better plan will be plan 1