Answer is C. By solving x-y=-5 to x=-5+y and converting 2x + y = -1 into 2x + x + 5 = -1 the answer becomes -2 =x. By plugging that into 2 (-2) + y = -1, the answer is y=3. So your answer is C
First you multiply both sides by -4.
(y + 12) * (-4)
___________ = 5 (-4)
-4
then you should simplify.
y + 12 = -20
subtract 12 from both sides to isolate the y.
y + 12 - 12 = -20 -12
-20 minus 12 is -32.
y = -32.
-hope this helps!<span />
They can stand 9 different ways
$570.60 because 90/100=.90 so multiply that with 634 with .90 you get 570.60