| quantity | total cost |
| 0 | 20 |
| 1 | 25 |
| 2 | 28 |
| 3 | 30 |
| 4 | 38 |
| 5 | 55 |
| 6 | 92 |
| 7 | 135 |
at output level 5, the total variable cost is?
Economics is regarded as a science because?
the opportunity cost of a worker going to the university is
which of the following items is not an example of circulating capital
