Answer:
(7x+2)(3x-1); (5x+4)^2 or (5x+4)(5x+4); 
Step-by-step explanation:
formula to find area is L* W = A ; meaning length multiplied by width equals to the area.
21. 
using the formula to find area...
l*w=a
(7x+2)(3x-1) would be your answer 
btw, don't put the "=a" at the end, since it's an expression :))
22. 
since the problem states that it's a square, you can just say either...
(5x+4)^2 or (5x+4)(5x+4) not sure which one your teacher accepts
 
        
                    
             
        
        
        
Answer: 
(D) -0.2
Step-by-step explanation:
slope = 7-5 / 15 - 25
 
        
             
        
        
        
Answer:
9+9 isnt 7
3+4 is 7
and 4+4 is 8
Step-by-step explanation: