3/4-(x+1/8)=5/16
3/4-x-1/8=5/16
3/4-1/8-5/16=x
Common denominator: 16
x=(4×3-2×1-5)/16=(12-2-5)/16=5/16
Answer: x=5/16
 
        
             
        
        
        
Answer:
Step-by-step explanation:
i have no idea but i thinkit is A.or D i think the kid is right with a different answer 
happy to help
 
        
             
        
        
        
Profit = Revenue - Cost = R(x) - C(x) = (x^2 + 20x + 50) - (50x + 30) = x^2 - 30x + 20