Answer:
2 is a number and "twice a number" means multiply by 2.
 
        
                    
             
        
        
        
Answer:
They both have the same answer.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
 I Think Yes! 
Step-by-step explanation:
Cause I Also Have A Straight Teeth and Also I Don't Wear Retainer!!
 
        
             
        
        
        
Answer:
a) yes
b) 2560
Step-by-step explanation:
An exponential function has a common ratio between points uniformly spaced. Here, the data points are 10 years apart. 
The ratio of the first two values is 4000/5000 = 0.8.
The ratio of the next two values is 3200/4000 = 0.8.
These ratios are the same, so the data is consistent with an exponential function.
The common ratio can be used to predict the next value. The next value is predicted to be ...
   3200 × 0.8 = 2560
 
        
             
        
        
        
Answer:
you would save 11.51 dollars
Step-by-step explanation:
12 cans times the vending machine price of 1.25$= $15
15-3.49=11.51