Okay i answered by comment but now i can make an official answer here:
a) i got 5,828.6 grams / about 13lb
b) i got 273,391.48$ 
hope this helps!
        
             
        
        
        
You start with 24, there are 8 added, there are 12 taken away, then 9 are taken away. The equation looks like:
24 + 8 - 12 - 9 = <u>11</u>
        
             
        
        
        
Answer:

Step-by-step explanation:
Count the number of zeros, if it's a perfect power of 10. :)
 
        
                    
             
        
        
        
226.981 I think Because you have to multiply 6.1*6.1*6.1