5. (20 points) An experiment was conducted on a new model of a particular make of automobile to determine the stopping distance at various speeds. The following data were recorded.
| Speed, x (km/hr) | 35 | 50 | 65 | 80 | 95 | 110 |
|---|---|---|---|---|---|---|
| Stopping distance, y (m) | 16 | 26 | 41 | 62 | 88 | 119 |
【題組】(b) Fit the polynomial regression equation in part (a).