Answer:
 The choice third ; a=9 , c= 18
Step-by-step explanation:


 
        
             
        
        
        
Answer:
D: x=12 
Step-by-step explanation:
 
        
             
        
        
        
Add the who numbers: 4 + 2 = 6
You are correct, it's C. 6
        
             
        
        
        
Given:
The recipe calls for  cup of chili powder.
 cup of chili powder.
Karl only wants to use half as much so it won’t be so spicy.
To find:
How much chili powder should Karl use?
Solution:
We have,
Chill power for recipe =  cup
 cup
Chill power used by Karl is half  of chill power for recipe.
 cup
 cup cup
 cup
Therefore,  cup of chili powder should Karl use.
 cup of chili powder should Karl use.
 
        
             
        
        
        
2*10^8
the exponent would be 8
hope this helps!