
So y=2x is the only answer that fit y=kx, while k=2
 
        
             
        
        
        
Hey there!
Andrea makes 20% more than Cassidy.
Work:
10 x 0.20 = 2
10 - 2 = 8
So that proves it is 20%.
Hope this helps!
        
             
        
        
        
 
Answer is option b)38.5 sq.units 
 
Given vertices are A(-4,2) ,B(3,2),C(3,-5) and D(-4,-2)
Area of polygon is defined in the image. 
If you have any doubts see the image or ask in comments box. 
 HAVE A NICE DAY!
THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION. 
 
        
             
        
        
        
79.	Is 52 800 centimeters greater than 1 kilometer?
According to the unit of conversion in every 1 kilometer, there is a total of 100 000 centimeters.
Now, the given value of centimeters is equals to 52 800
=> 1 km = 100 000 cm
=> 52 800 cm is less than the value of 100 000 cm which is equivalent to 1 km.
Thus, the given is not correct. 52 800 cm is less than 1 kilometer.