Suppose your company runs a shuttle business of a hotel to and from the local airport. The costs for different customer loads are:

1 customer:$30

2 customers: $32

3 customers: $35

4 customers: $38

5 customers: $42

6 customers: $48

7 customers: $57

8 customers: $68.

What are your marginal costs for each customer load level?

Q

TC

MC

Total Rev

Profit

1

30

10

-20

2

32

20

-12

3

35

30

-5

4

38

40

2

5

42

50

8

6

48

60

12

7

57

70

13

8

68

80

12