I'm sorry, but the table you mentioned is not included in your question. However, if we assume that Valterri completed the 30 laps in a total time of t minutes, then his unit rate for Day 2, in minutes per lap, would be calculated by dividing the total time by the number of laps.
So, Valterri's unit rate for Day 2 would be:
Unit rate = Total time / Number of laps
Unit rate = t / 30
We cannot determine his unit rate without knowing the total time taken to complete the 30 laps.