20y+5x≤100  divide all terms by 5
4y+x≤20  subtract x from both sides
4y≤-x+20  divide both side by 4
y≤-0.25x+5
So just in simplest terms, the slope is slightly negative and it should be shaded under the line since y is less than the line...so it is the second graph.
        
             
        
        
        
Area = length * width
5/8 = 10 * width
width = (5/8) / 10
width = 1 / 16
width = 0.0625 inches
        
             
        
        
        
If you're asking how to simplify, then this is how you do it. 
when a power meets another power but in brackets, then you have to multiply the powers. ¼ × 4 would be 1. i simplified 81 to 3⁴.
 
        
        
        
Answer:
-5 
Step-by-step explanation:
from graph
 
        
             
        
        
        
Answer:
x-int: 2
y-int: -2
Step-by-step explanation:
x-int is where the line crosses the x axis (horizontal line) and y-int is where the line crosses the y axis (vertical line).