A chemical reaction is second order with respect to A and fi…

A chemical reaction is second order with respect to A and first order with respect to B.  The reaction is third order overall.  What is the value for k for this reaction?  Submit your answer with the correct number of significant figures. Exp initial conc. of A(M) initial conc. of B(M) Rate (M/s) 1 `x` `y` `z`