Answer:
the second row is not a function! top row is a function 
Step-by-step explanation:
because in order for it to be a function for every x there is exactly one y meaning there is no repeating x values! the second row had x = 5 twice, therefore they repeated x values meaning it's not a function
 
        
             
        
        
        
Answer:
4 is in the hundredths 1 is in thousandths 9 is in the 10 thousandths 
 
        
                    
             
        
        
        
Answer:
x=75
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The error in rounding a number is half of the unit of measure. The number was rounded to the nearest 0.1 unit so the error is half of 0.1 which is 12⋅0.1=0.05  
2
1
  
 ⋅0.1=0.05. Since 3.7+0.05=3.753.7+0.05=3.75 and 3.7−0.05=3.653.7−0.05=3.65, then the error interval is \boxed{3.65\le x<3.75}.
Step-by-step explanation: