Question 196225
Since A W B= 2A + 5B, this means that wherever you see an "A", simply plug in the left value and wherever you see a "B", plug in the right value. 



So...


3 W 1 = 2(3) + 5(1) = 6+5 = 11



which means that...


9 W (3 W 1) = 9 W 11 = 2(9) + 5(11) = 18 + 55 =73



So the answer is 



9 W (3 W 1) = 73