Answer:
6b^4+6b^3-923
Step-by-step explanation:
 
        
                    
             
        
        
        
1/5th you take total amount over amount drawn
        
             
        
        
        
Answer:
75 hours 
Step-by-step explanation:
16 times x=1200 or 
16x=1200
divide both sides by 16
1200/16
so we simplify 1200/16 by factoring out the ones (4/8=1/2 times 4/4 since 4/4=1)
1200=3*2*2*2*2*5*5
16=2*2*2*2*1
so we notice that there are four 2's in both so those are the 'ones' so cross them off and get
3*5*5/1 or 75/1 or 75 hours
 
        
             
        
        
        
25x^2+10x+1
25x^2+5x+5x+1
5x(5x+1)+1(5x+1)
(5x+1)(5x+1)
(5x+1)^2