Answer:
I agree with what they said
Step-by-step explanation:
(:
Answer:
y = 1, x = - 8
or
(-8, 1)
Step-by-step explanation:
-x + 4y = 12
x + y = -7
add the equations together
0x + 5y = 5
5y = 5
y = 1
substitute y for 1 in one of the original equations to find x
x + y = -7
x + 1 = -7
x + 1 - 1 = - 7 - 1
x = - 7 - 1
x = -8
Esitmate:
9 /3 = 3
and
8-4 = 4
so it would be 3x10^4
answer is C
