A).(x - 10) X (x - 4)
    (4 - 10) X (4 - 4)
         6    X    0  = 0
        
                    
             
        
        
        
Y=3x-9
0=3x-9
-3x=-9
x=3
X-int = 3
        
             
        
        
        
Answer:
C and D
Step-by-step explanation:
 
        
             
        
        
        
Answer:
25
Step-by-step explanation:
17 / 0.68 = 25
check your answer?
25 * 0.68 = 17 
:)
 
        
                    
             
        
        
        
Answer:
42-38
42 + (-38)
-38+42
Step-by-step explanation:
In all of these expressions, the 38 has to be negative because that is what you're taking away from the 48. When you have -(- it turns into a +. 
In -42 + 38 the 42 is negative, but that is Emma's total amount so it's positive
With -42 -(-38) they did the just added those two together which would make the 42 still negative and the 38 positive.
THen with 42 + 38 the 38 is being subtracted from what she has so you would not add 38 to her total.