Answer:
30 and 20 respectively 
Step-by-step explanation:
Let the number of sofas to be built be s and the number of recliners be r.
For the time part, we have the following equation:
8s + 6r = 340
For the money part:
180s + 105r = 6750
Now let’s solve these equations simultaneously.
Let’s change the form of the second equation:
180s + 17.5(6r) = 6750
From the first equation, 6r = 340 - 8s
Insert this into the third equation 
180s + 17.5(340-8s) = 6750
180s + 5950 - 140s = 6750
40s = 6750 - 5950
40s = 800
s = 20
Substitute the value into the first equation 
8(20) + 6r = 340
6r + 160 = 340
6r = 180
r = 30
 
        
             
        
        
        
The answer is C. 
Hope that helps
        
                    
             
        
        
        
-338 is the answer or you got no cookies <3
        
                    
             
        
        
        
Answer:
They do because y is always 4 times of x.
Step-by-step explanation:
 
        
             
        
        
        
Right triangle because of the 90. Every triangle having an angle of 90 degrees is a right triangle.