What level of line maintenance expense would be expected for aphone company 75,000 customer according to quadratic equationestimated regression function? Show how you arrived at thisvalue.
| Customers (in 1000s), X | Line Maintenance Expense (in $1000s), Y | X^2 | Y^2 | XY |
| 25.3 | 484.6 | 640.09 | 234837.16 | 12260.38 |
| 36.4 | 672.3 | 1324.96 | 451987.29 | 24471.72 |
| 37.9 | 839.4 | 1436.41 | 704592.36 | 31813.26 |
| 45.9 | 694.9 | 2106.81 | 482886.01 | 31895.91 |
| 53.4 | 836.4 | 2851.56 | 699564.96 | 44663.76 |
| 66.8 | 681.9 | 4462.24 | 464987.61 | 45550.92 |
| 78.4 | 1037 | 6146.56 | 1075369 | 81300.8 |
| 82.6 | 1095.6 | 6822.76 | 1200339.36 | 90496.56 |
| 93.8 | 1563.1 | 8798.44 | 2443281.61 | 146618.78 |
| 97.5 | 1377.9 | 9506.25 | 1898608.41 | 134345.25 |
| 105.7 | 1711.7 | 11172.49 | 2929916.89 | 180926.69 |
| 124.3 | 2138.6 | 15450.49 | 4573609.96 | 265827.98 |
Total | 848 | 13133.4 | 70719.06 | 17159980.62 | 1090172.01 |
