Answer:
80
Step-by-step explanation:
 
        
             
        
        
        
Answer:
C.
Step-by-step explanation:
10 cups divided by 4 containers  = 2.5 or 5/2 cups per 1 container
 
        
             
        
        
        
4x+2x=180
6x= 180
Divide by 6
X= 30
        
             
        
        
        
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