Answer:
A= X,B
B= L,G
C= M,W
The total number of combinations is 12

- a number

- its square

- the sum

- less than or equal
negative three - I don't have to explain this one, do I?

- the sum of a number and its square is less than or equal negative three
It is answer choice B. Using the distributive property, -12x^3+15x^2-24x-6x^2+30x-42. Then combine like terms.
Add these together.
You get -15y=-45
So y=3
Now plug in to first equation.
8x-8(3)=-16
8x-24=-16
8x=8 so x=1
Check both values in second equation.
-8(1)-7(3)=
-8-21=-29
It works...so x=1, y=3