-8x+18y=-12
24x-18y=18
16x=6
X=3/8
Y=3-12)/6
y=-3/2
Answer: Its B
Step-by-step explanation: Hope this helps you
She should get 84 in her fifth test to have an average of 80
(75 + 81 + 77 + 83 + x)/5 = 80
(316 + x)/5 = 80
[(316 + x)/5] (5) = 80(5)
316 - 316 + x = 400
316 + x = 400 - 316
x = 84
I think its b that what it looks like to me
i hope this helps
