Gary had 30 tickets. He spent 8 tickets on cotton candy and each arcade game costs 3 tickets. What is the greatest number of arcade games gary can play? Identify the variable, write an inequality and solve please.

Another question:
Nancy rents a car. The rental charge is $29.50 plus $19 per day. If the total bill was $143.50, how many days did Nacy rent the car?

Please answer both, thanks!