Answer:
E. 1,700 is your answer. 
Step-by-step explanation:
What you do is you add 668 + 575 + 453 together. 
668 + 575 + 453 = 1,696.
The hundreds place is the 9. Since the 9 is bigger than 4 it gets rounded up. That means the 6 in front of the 9 becomes a 7 and 9 and 6 become a zero.
E. 1,700 is your answer. 
 
        
             
        
        
        
-4x+y= -9 can be turned into 
y= -9 + 4x 
5x+2y=3 (plug y in)
5x+2(-9+4x)=3
5x-18+8x=3 
5x+8x=3+18
13x=21
divide 13 on both sides 
x=1.6
        
             
        
        
        
Answer:
What I think are the answers are C,D, and A, hope this helps.
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
2/5×7500
2×1500
3000
RM=3000
 
        
             
        
        
        
Answer:
15
Step-by-step explanation:
8.25 minus 7.80 is 0.45 45 divided by 3 is 15 so the answer is 15