Andy's Cab Service charges a $6 fee plus $0.50 per mile. His twin brother starts a rival business where he charges $0.80 per mile but does not charge a fee. Write a cost equation for each cab service in terms of the number of miles.
Graph both cost equations.
For what trip distances should a customer use Andy's Cab Service? For what trip distances should a customer use Randy's Cab Service? Justify your answer algebraically, and show the location of the solution on the graph