Answer:
See graph attached
Step-by-step explanation:
 
        
             
        
        
        
Her gross weekly pay would be $1375. 
25 * 40 = $1000
time and a half means she would make $37.50 for the 10 hours overtime she works. 10 * 37.5 = 375
375 + 1000 = $1375
        
             
        
        
        
An event that cannot happen is impossible
        
                    
             
        
        
        
Two lines that intersect to create a 90 degree angle