This time we have thrown even more variables into our model, including the number of bids in each auction (`nBids`

) and the number of `wheels`

. Unfortunately this makes a full visualization of our model impossible, but we can still interpret the coefficients.

```
Call:
lm(formula = totalPr ~ duration + startPr + cond + wheels + nBids,
data = mario_kart)
Coefficients:
(Intercept) duration startPr condused wheels
39.3741 -0.2752 0.1796 -4.7720 6.7216
nBids
0.1909
```

Choose the correct interpretation of the coefficient on the number of wheels: