The value of x would equal to 8
        
             
        
        
        
Answer:
$500 invested at 3%
$1300 invested at 6%
Step-by-step explanation:
 
        
             
        
        
        
Figure A best represents it because if you add 576 and 49 you get 625, which shows the theorem of a^2+b^2=c^2.
 
        
                    
             
        
        
        
Answer:
21/4
Step-by-step explanation:
21 y = -4x           Divide 21 on both sides
y = -4/21x            Slope is -4/21
Perpendictulare lines have a slope that are the negative inverses of eachother, so flip the 4 and the 21 and make it positve instead of negative