Answer:
Step-by-step explanation:
1.
c+9=±8
either c=8-9=-1
c=-8-9=-17
so c=-1,-17
D
2.
8x^2-3=2
8x^2=5
so A
3.
so D
or
Answer: 2, -3
x = 0
y = 2
they all went to the stairs
67.90 I don't know u tell me
94