Move the decimal places, the answer is 6.7 x 10^6
        
             
        
        
        
Answer:
-20
Step-by-step explanation:
-8v-9=7
Add 9 to each side
-8v-9+9=7+9
-8v = 16
Divide by -8
-8v /-8 = 16/-8
v = -2
Now find 
7v -6
7(-2) -6
-14 -6
-20
 
        
                    
             
        
        
        
Answer:
 B. infinite solutions along a line
Step-by-step explanation:
The matrix is equivalent to the equations ...
 x = 2
 y = 9
 0z = 0 . . . . . . true for any z
This tells you the solutions are ...
 (x, y, z) = (2, 9, z)
This defines a line parallel to the z-axis.