(- 2, - 3) is a solution to the given system of equations.
Answer: Option D
<u>Step-by-step explanation:</u>
Given equation are not presented in proper format. So, let assume the given system of are as below,
          2 x - y = -1
          2 x -4 y = 8
Now, subtract the second equation from the first, we get
           (2 x - y) -(2 x - 4 y) = -1 -8
           3 y = -9  
            y = -3 (obtained this when divide by 3)
Substituting y = - 3 into the first equation, we get
           2 x - (-3) = - 1
           2 x = - 1 + 3
           x = - 2 (obtained when divide by 2)
Now, the answer is (x, y) = (- 2, - 3)
 
        
             
        
        
        
Answer: B: 35ab^2c AND 7bc^2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A.
Step-by-step explanation:
B. y = 0x =0, or y =0, y is a constant.
A. y = 0.5x, in general from y = kx. It is the direct variation.
 
        
             
        
        
        
You could use the function: 
f(x)=30+2x
100=30+2x 
In which lets say he rode 3 rides. Plug in 3 for x.
100=30+2(3)
Then Multiply 
100=30+6
Then combine 30 and 6 to get 36.
Then you can subtract 36 from 100 to get 
$64 left over.