Question 4 1 pts Marshall has a car wash service. For each car, it costs Marshall $3.50 but Marshall is able to sell the service for $5 per car. Marshall services 1,000 car per month. Marshall is considering adding a hand-wax/dry feature to the car wash. If Marshall did that, he would need to spend another $2.50 per car on labor and materials, but he would then be able to charge $8 for the service per car. If Marshall adds the hand- wax/dry feature, how much better or worse off will he be (assuming the same quantity of 1,000 cars)? h