Car rental requires that the available credit card limit meet the pre-authorization of car rental demand, as shown in the following figure:

1. Rent a car 100000 yuan, then the credit card needs the pre-authorization of 5000 yuan to 7000 yuan.

It costs 10000 yuan to 15000 yuan to rent a car for more than 22,000 yuan.

3. The available credit card amount is not less than 5,000 yuan, and the credit card is valid for more than one month.