What are the expressions?
        
             
        
        
        
Answer:
69 and 70
Step-by-step explanation:
69 + 70 = 139
69 and 70 are consecutive numbers that add up to 139.
 
        
                    
             
        
        
        

The demoin is all real numbers greater than 6
 
        
             
        
        
        
A) (2, 7) (0, 3)
B) (1,5) (3, 3) 
C) inconsistent because it starts to go down.
D) (0,3) (1, 5) (2,7) (3,3)
I hope this helped
    
        
             
        
        
        
Answer:
   c.  $0.75 per minute at one rate for the first 5 minutes and $0.25 per minute thereafter
Step-by-step explanation:
The last 5 minutes of the 12-minute call cost ...
   $5.50 -4.25 = $1.25
so the per-minute rate at that time is ...
   $1.25/(5 min) = $0.25/min . . . . . . . . matches choice C only
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You know the answer at this point, but if you want to check the rate for the first 5 minutes, you can subtract 2 minutes from the 7-minute call to find that ...
   The first 5 minutes cost $4.25 - 2·0.25 = $3.75, so are charged at ...
      $3.75/(5 min) = $0.75/min . . . . . . . matches choice C