Answer:
14
Step-by-step explanation:
105 and (6x-21) the same. So you do 105 minus 21, then divide that by 6.
 
        
                    
             
        
        
        
Use PEMDAS. Parenthesis, Exponents, Multiply, Divide, Addition, Subtraction.
So, you'd distribute 5 into the parenthesis, leaving you with 9+20x+20, then add like terms. 20x+29 
        
                    
             
        
        
        
Answer will be C. 241.6 ft.²
        
             
        
        
        
Answer:
1) 243 in.²
Step-by-step explanation:
1)
A = 18 in. * 18 in. - 9 in. * 9 in. = 243 in.²
  
        
             
        
        
        
Answer:
I don’t know lol
Step-by-step explanation: