Using the given data, determine the rate constant of this reaction.

Using the given data, determine the rate constant of this reaction.
A + 2B --> C + D
Given Data:
Trial A B RATE (M/s)
1 .310 .340 0.0213
2 .310 .680 0.0213
3 .620 .340 0.0852
k=? the units are M-1 s-1