She should leave $30. Hope it helps! If you could vote me brainiest, that would be awesome!
        
                    
             
        
        
        
Y = 3x is the answer
I did the math
        
             
        
        
        
Answer:
\left(\frac{\sqrt{78}}{30},\ \frac{\sqrt{78}}{39}\ ,\frac{41\sqrt{78}}{390}\right)
 
        
             
        
        
        
Answer:
D. 15 cm, 9 cm, 24 cm
Step-by-step explanation:
The three lengths that could be the lengths of the sides of a triangle, must satisfy the following condition;
---sum of any two smaller sides chosen must be equal to the third side.
Test option A : 6 cm + 11 cm = 17 cm  ( 17 cm ≠ 23 cm) 
Test option B: 10 cm + 15 cm = 25 cm (25 cm ≠ 24 cm)
Test option C: 6 cm + 6 cm = 12 cm (12 cm ≠ 22 cm)
Test option D: 15 cm + 9 cm = 24 cm (24 cm = 24 cm) ---correct option.
Thus, the three lengths that could be the lengths of the sides of a triangle are 15 cm, 9 cm, and 24 cm
 
        
             
        
        
        
Answer:
y/7  >/  -19
That middle sign is the greater than or equal to sign (couldn't find on keyboard) 
Step-by-step explanation:
y divided by 7 is greater than or equal to -19
Quotient means divided by.