The number was 160 because 5/4•128=160. 5/4 represents inverting 80% and multiplying it by the number to determine how the result became 128. For checking over all you have to do is do 4/5 or 80%•160 which shall give you 128.
        
             
        
        
        
XY is the rightmost side of the rectangle.  Since you have the image already graphed, you can just <u>count</u> how many units there are from X to Y.
If you are starting at point X and you walk to point Y, how many "lines" do you cross to get there?
Answer: 4 units
        
             
        
        
        
Answer: -14v-24
Step-by-step explanation:
2v-8(3+2v)
2v-(24+16v)
2v-24-16v
-14v-24
 
        
                    
             
        
        
        
5. terms are separated by + and - signs