Chris will rent a car for a day. The rental company offers two pricing option: option a and option b. for each pricing option, cost (in dollars) depends on miles driven, as shown below. (A) if Chris drives the rental car 75 miles, which option costs more?
Option a or option b
How much more does it cost than the other option?

(B) For what a number of miles driven do the two options cost the same?
If Chris drives less than this amount, which option costs more?
Option a or option b