Ms. Lorenz needs to rent a car for 3 days. she can choose from two plans. plan a costs $60 per day. plan b costs $30 per day plus $.40 for each mile she drives. Ms. Lorenz decides that plan b will cost her less than plan a. write and solve an inequality to represent the number of miles, m, that Ms. Lorenz expects to drive. graph the solution set and interpret your graph.