NRG shuttle service runs a game day parking service for the local minor league triple A ball club. The cost for different customer loads are 1:$30,...

NRG shuttle service runs a game day parking service for the local minor league triple A ball club. The cost for different customer loads are 1:$30, 2:$32, 3:$35, 4:$38, 5:$42, 6:$48, 7:$57, and 8: $68. What are your marginal cost for each customer load level? If you are compensated $10 per ride, what customer load would you want ?