Answer:
2.6 and 5.4 are both the same sign, he should add them and then take that negative sign from (-5.4), so the answer would be -8.0.
 
        
             
        
        
        
Answer:

Step-by-step explanation:
 
 
        
                    
             
        
        
        
Answer: Second Option

Step-by-step explanation:
The exponential growth functions have the following form:

Where a is the main coefficient, b is the base and x is the exponent.
For this type of functions the base b must always be greater than 1. Otherwise it would be an exponential decay function
Among the options given, the only function whose base is greater than 1 is the second option:

 
        
                    
             
        
        
        
Answer:
0.0625 kg per bag
or 1/16th of a kilogram per bag
Step-by-step explanation:
You'd need to divide the total amount the the number of sections. 
In this case, it'd be 0.5 kg/8 bags, resulting in 0.0625 kg of flour per bag.
I hope this helps!
 
        
             
        
        
        
The first two pairs.. just substitute the x-coordinate and find y