No, she will still owe $9.30.                    $25.63 - $16.33= $9.30
        
                    
             
        
        
        
The are of the triangle will be 12.5 units.
On marking the given vertices (0,0), (0,5), (5,5) of the triangle we get, the base of the triangle = 5 units and height of the triangle = 5 units.
Now, we know area of triangle = 
 
 
        
        
        
Answer:
x = 5
Step-by-step explanation:
The sides are in proportion. 
The proportion is 20/36
The other sides must be in the same proportion: 5x / 45
5x/45 = 20/36        You can reduce the left side by dividing top and bottom by 5
1x / 9 = 20/36          You can reduce the right side by dividing by 4
x / 9 = 5/9                at this point you should be able to see that x = 5, because the denominators are the same.
That is the answer.
However you can extend this by cross multiplying
9x = 45                      Divide by 9
x = 45/9
x = 5
 
        
             
        
        
        
But the correct usage is that 1:2 means a ratio of 1 to 2, meaning 1 part of something and 2 parts of something else (not out of 2 parts total) ...