4, 3, 7 I hope this helped :)
        
             
        
        
        
A. Well she starts with 24 buns. She ate 1/2 half of a bun leaving 23 1/2 buns left. Then she gave her mother and father a bun each so you do 23 1/2 - 2 which gets you 21 1/2 buns. So the total number of buns that she has left is 21 and 1/2 buns.
        
             
        
        
        
Answer:
The rearrangement can be 45, 987 , 310 
Step-by-step explanation:
Here, we want to rearrange the number such that 9 is worth 10 times as what it is worth presently 
The value of 9 presently is 90,000
So 10 times as worth will be 10 * 90,000 = 900,000
So we can have the new arrangement as;
45, 987, 310 
 
        
             
        
        
        
Answer:
Add 7 to both sides
Step-by-step explanation:
You would need to add 7 to both sides to cancel out the 7 on the right side of the equation to get x one step closer to being by itself.
Then you would get 4x = -8.
Next divide by 4 on both sides to get x by itself so do the inverse operation of what 4 was doing to x. 
x = -2
 
        
             
        
        
        
Answer:
   14 cm
Step-by-step explanation:
The applicable formula is ...
   s = rθ
   s = (7 cm)(2) = 14 cm