Primo car rental agency charges ​$21 per day plus ​$0.20 per mile. Ultimo car rental agency charges ​$24 per day plus ​$1.00 per mile. Find the daily mileage for which the Ultimo charge is four times the Primo charge. The mileage is .

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same

Can someone show me step by step how to do this?