Angle g would be congruent/equal to itself because of verticals angles theorem. i hope that helped a bit
Between the 4 and the 7 is it a multiplication or an X?
If the multiplication sign, this is the solution

Answer:
63
Step-by-step explanation:
Because, 100% of 70 would be 7. Now we have that number lets multiply it by 9 because of 90%. 9 x 7 = 63 first-graders
Y=x+4
3x+Y=-8
3x+x+4=-8
X=-3. Substitute the value of x
Y=-3+4
Y=1
(X,Y)= (-3,1)
So the answer is C