Answer:
All but the second one
Step-by-step explanation:
The rule of a function is that you can't have the same x values in an expression. You can have multiple y values but not multiple x values.
 
        
             
        
        
        
        
Answer:
1/4 is A and 1/20 is B
Step-by-step explanation:
Not much of an explanation needed
 
        
             
        
        
        
Answer:
$13.12 per hour
Step-by-step explanation:
Take the total pay and divide by the number of hours
$282.08/21.5 hours
$13.12 per hour