Answer:
d
Step-by-step explanation:
rearrange it like an equation.
take everything else out of the middle apart from x.
make sure that what you do to the middle you do to both sides
 
        
             
        
        
        
Hiya!
The answer is: quadrilateral
Every side of a quadrilateral are parralle and has the same length.
A quadrilateral is a 2-dimensional closed shape with four straight sides.
Have a nice day
 
        
             
        
        
        
4t+2c=200
2t+7c=400
I will solve for c in terms of t first
4t+2c=200
2c=200-4t
c=100-2t
Then I will substitute this in for c in the second equation to make it single variable
2t+7c=400
2t+7(100-2t)=400
2t+700-14t=400
300t=12
t=25 
Tables cost $25 each
Plug t back into one of the ORIGINAL equations to find the cost of chairs
4(25)+2c=200
100+2c=200
2c=100
c=50
Chairs cost $50 each
Hope this helps! :)
        
             
        
        
        
2 _ _ _ 3 _ _ _ 4 _ _ _                      add one 
_ 11 _ _ _ 14 _ _ _ 17 _ _                add three
_ _ 38 _ _ _ 47 _ _ _ 56 _                add nine
_ _ _ 119 _ _ _ 146 _ _ _173           add seventeen 
Hope this helps!!!