The graph below shows the relationship between the number of dollars a worker earns and the number of hours worked.
Which statement best describes the rate of change for this situation?
A. The worker earns $40 per hour. 
B. The worker earns $8 per hour. 
C. The worker earns $10 per hour.
D. The worker earns $320 per hour.
                                             
                                          
                                          
                                        
											