Answer:
x - 80
Step-by-step explanation:
Ravi had x dollars in all.
x - 80
 
        
             
        
        
        
To write this equation, you need use the formula y=mx+b.
m represents the slope and b represents the y intercept.
The y intercept is the point where the line touches the y axis. In this case, the y-intercept is 1.
The slope is just rise over run from one coordinate to another. The slope is 2/-1 which could be simplified as -2. The slope just means that we are going up 2 and left 1 to get to a new coordinate. 
The equation is y=-2x+1
Have a good day! :)
        
             
        
        
        
Answer:
9
Step-by-step explanation:
5-(-8)-4=9
Hope this helps!
 
        
                    
             
        
        
        
Answer:
1
2
1
0
*
4
8
Step-by-step explanation: