You have to factor and then get the x intercepts
 
        
        
        
Answer:
2 sqrt(15)
Step-by-step explanation:
sqrt(60) = sqrt(4*15) = 2 sqrt(15)
 
        
             
        
        
        
Answer:
She has 400 megabytes left 
Step-by-step explanation:
 
        
             
        
        
        
Answer: 1.2 10x ^3
Step-by-step explanation:
 
        
                    
             
        
        
        
Robot 1- W = 20(3m) W= 60Nm
Robot 2- W= 30N (3m), W = 90Nm
Robot 3- W= 10N(2m), W= 20Nm 
Robot 4- W= 30N(2m), W= 60Nm
Robot 2 did the most work, Robot 3 did the least amount of work and Robots, 1 and 4 did an equal amount of work