Let x= width 
Length= 5x-4
2(x)+2(5x-4)=160
2x+10x-8=160
12x-8=160
 +8. +8
12x=168
x=14
width=14
length= 5(14)-4=66
        
             
        
        
        
Answer:
He will save 24 dollars.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
see below
Step-by-step explanation:
Find the magnitude   (-1)^2  + (sqrt3)^2 = m^2   m = 2 
find the angle    arctan (sqrt3/-1) = 120 degrees
the cube root would then be 
![\sqrt[3]{2}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B2%7D) (cos 40 + isin 40)
(cos 40 + isin 40) 
 
        
             
        
        
        
Answer:
x ≈ 1.28
Step-by-step explanation:
I just took the exam:
Area of rectangle =(3x-1)(x+6), Area of circle = PI(x+1)^2. If you graph these and find where they intersect, you will get x ≈ 1.28.
I hope this helped! :)