These would have infinite solutions because this is a slope-intercept equation. Since you are provided with the y-intercept in both, you can put anything in for the slope and it will work.
Hope this helps!
 
        
             
        
        
        
11.25 - 10.5 = 0.75
Knowing that this is the profit she makes with one share, so:
20 * 0.75 = 15
Caroline made $15 profit.
 
        
             
        
        
        
9 times 5 equals 45 so yes
        
                    
             
        
        
        
Region B
The solution of two intersecting lines is the point that both share in common. From a point of view, it is the point where the two lines meet. In this case, the point is in quadrant 1, or Region B.
        
                    
             
        
        
        
2, 3, and 5.
Hope this could help.
rrriok, the home of...idk