In this situation, the variable \( x \) represents the amount of money Jason charges for washing each car.
To break it down:
- Jason mows 5 yards and charges $25 per yard, which totals \( 5 \times 25 = 125 \) dollars.
- He also washes 10 cars, which would generate an income of \( 10x \) dollars (where \( x \) is the charge for washing one car).
- The total money he made that day is given by the equation \( 5(25) + 10x = 225 \).
So, in this context, \( x \) is the fee per car wash.