What are the multiple choices
        
             
        
        
        
∣2x+7∣ for x=-4
Use the substitution method
∣2*-4+7∣
Mutiply first then add +7
∣2*-4∣= -8
∣-8+7∣= -1
Whenever there is a negative number for absolute value , the number becomes a + positive number. 
∣-1∣= 1
Answer:
1
 
        
             
        
        
        
Answer: 9, 9x, 18x
Step-by-step explanation:
Hope it helps :D
 
        
             
        
        
        
6 i believe but im not sure
        
             
        
        
        
Do 252 divided by 36 and you should get 7. so the average number of calls would be 7