Enter a simplified expression to represent the situation. This week Leo worked (x + 6) hours at a pizzeria. He is paid (x − 6) dollars per hour. Leo's friend Frankie earned worked the same number of hours, but he is paid (x − 7) dollars per hour.

Enter an expression for the total amount paid to the two workers. Then find the total amount if x = 13.

The expression for the total amount paid is

The total amount paid to the two workers was $