Here is the example in the form of a spreadsheet table.
| Y | C | Expen- diture |
Y on vertical axis |
|---|---|---|---|
| 0 | 500 | 1500 | 0 |
| 500 | 850 | 1850 | 500 |
| 1000 | 1200 | 2200 | 1000 |
| 1500 | 1550 | 2550 | 1500 |
| 2000 | 1900 | 2900 | 2000 |
| 2500 | 2250 | 3250 | 2500 |
| 3000 | 2600 | 3600 | 3000 |
| 3500 | 2950 | 3950 | 3500 |
| 4000 | 3300 | 4300 | 4000 |
| 4500 | 3650 | 4650 | 4500 |
| 5000 | 4000 | 5000 | 5000 |
| 5500 | 4350 | 5350 | 5500 |
| 6000 | 4700 | 5700 | 6000 |
| 6500 | 5050 | 6050 | 6500 |
| 7000 | 5400 | 6400 | 7000 |
| 7500 | 5750 | 6750 | 7500 |
| 8000 | 6100 | 7100 | 8000 |
| 8500 | 6450 | 7450 | 8500 |
| 9000 | 6800 | 7800 | 9000 |
| 9500 | 7150 | 8150 | 9500 |