Answer
rate = k[NO2][Cl2] Overall rate = 3
therefore the rate with respect to NO is 2 as the power of its concentration is 2 and similarly
Work Step by Step
the rate with respect to [Cl2] is alo 1.
The overall rate is the sum of these values and therefor it is the rate with respect to NO+ The rate with respect to Cl2 which results in an overall rate of 2+1 = 3