It will take him 240 min and if u convert that it will take him 4 hours
        
             
        
        
        
Answer:
Maybe -12? 
Step-by-step explanation:
Because sometimes variables on their own symbolize 1, so we can subtract 13 from 1 to get -12.
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
convert mixed number to improper fractions
3 =
 =

apply the fraction rule:

multiply the numbers

 
        
             
        
        
        
You combine like terms. 
-2x+9x
whatever answer that is you then combine the like terms -9+-1 the you just make an expression out of them.
        
                    
             
        
        
        
Answer:
x=−7
Step-by-step explanation:
(x+4)(2)−3(x+4)−3=0
(x)(2)+(4)(2)+(−3)(x)+(−3)(4)+−3=0(Distribute)
2x+8+−3x+−12+−3=0
(2x+−3x)+(8+−12+−3)=0(Combine Like Terms)
−x+−7=0