Evaluate the Integral by Making an Appropriate Change of Variables $\iint _ { R } x y d A$

Short Answer

Evaluate the integral by making an appropriate change of variables. Round your answer to two decimal places. $\iint _ { R } x y d A$ R is the parallelogram bounded by the lines $2 x - 3 y = - 5,2 x - 3 y = - 2,5 x + 2 y = - 5,5 x + 2 y = - 3$ .