Answer:
Step-by-step explanation:
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In 4 hours they will walk 14 miles
        
                    
             
        
        
        
If f(x) is = to 0 then that means that you would have to plug the 0 in for all of the x that are in the function and the solve it.
f(x)= x3-4x-1
f(0)= (0)3-4(0)-1
0        0        0 -1
-1 
so that means that -1 would be the answer for the function
        
                    
             
        
        
        
128, because it’s actually 256 but 256/ 2= 128
        
                    
             
        
        
        
Answer:
y=4
Step-by-step explanation: