Let n be old painters time. Then the new painters are 2n. So:
1/n+1/2n=1/6
2+1=2n/6
2n=18
n=9
The old painters take 9 hours; the new ones take 18
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Answer:
x+18
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:
Just do this 
2(L+B)
2(18+24)
2×42
84 Ans. 
 
        
                    
             
        
        
        
y=3x-2 is a function because it passes the vertical line test.
This means that for each individual x-value that we substitute for x, there is a unique individual y-value that y ends up equaling to.