I think (A.) if not im so sorry 
Good luck
        
             
        
        
        
Answer:
542.9
Step-by-step explanation:
Please mark brainliest
 
        
                    
             
        
        
        
193.75 miles cause 7.75 * .5 = 3.875 and 3.875* 50 = 193.75
        
             
        
        
        
Answer:
y = -2    x = 0
Step-by-step explanation:
1. 3x-4y = 8
2. 18-5y = 10
Multiply equation 1 by 6
3. 18x-24y = 48
Subtract equation 2 from equation 3
4. -19y = 38
         y = 38/-19
         y = -2
Sub y = -2 back into equation 1
       3x-4(-2) = 8
       3x + 8 = 8
       3x = 0
       x = 0/3 
       x = 0
 
        
             
        
        
        
Answer: 3,130
Step-by-step explanation: 2,815 + 315 = 3,130