Answer:

Step-by-step explanation:
Using pythagoras theorem, 

 
        
             
        
        
        
The 3 in 24,345 has a value of 300. A number 10 times that would have a value of 300*10 or 3,000. The 3 in choice C has a value of 3,000 so C is the right answer.
 
        
             
        
        
        
Beths weekly income is 600$ per week.
600 / 0.4 = 240
        
                    
             
        
        
        
The construction steps are in the following order:
A, D, B, C.
Hope this helps!
        
                    
             
        
        
        
Answer:
x^2 - 3x - 30
Step-by-step explanation:
step 1: -9   +   -1   =   -10    
-3   +   -3   =   -6     
-1   +   -9   =   -10    
1   +   9   =   10    
3   +   3   =   6     
9   +   1   =   10
No two factors can be found
Trinomial can not be factored
step 2: ((3x2 + 5x) - 12) - 2 • (x2 + 4x + 9)
step 3: -30 + 1 = -29	
 -15 + 2 = -13	
 -10 + 3 = -7	
 -6 + 5 = -1	
 -5 + 6 = 1	
 -3 + 10 = 7	
 -2 + 15 = 13	
 -1 + 30 = 29	
so the answer is x^2-3x-30