Answer: -w(2w+7): -2w ^2 - 7w
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A. less than three batteries were used in five hours.
 
        
                    
             
        
        
        
Answer:6
Step-by-step explanation:Reorder 
2
2
 and 
−
x
-
x
.
y
=
−
x
+
2
y
=
-
x
+
2
3
x
+
3
y
=
6
3
x
+
3
y
=
6
Replace all occurrences of 
y
y
 in 
3
x
+
3
y
=
6
3
x
+
3
y
=
6
 with 
−
x
+
2
-
x
+
2
.
y
=
−
x
+
2
y
=
-
x
+
2
3
x
+
3
(
−
x
+
2
)
=
6
3
x
+
3
(
-
x
+
2
)
=
6
Simplify 
3
x
+
3
(
−
x
+
2
)
3
x
+
3
(
-
x
+
2
)
.
Tap for more steps...
y
=
−
x
+
2
y
=
-
x
+
2
6
=
6
6
=
6
Since 
6
=
6
6
=
6
, the equation will always be true.
y
=
−
x
+
2
y
=
-
x
+
2
Always true
Remove any equations from the system that are always true.
y
=
−
x
+
2
 
        
             
        
        
        
It is 12495 for sure i took the test and got it right