Michelle sells ice cream bars at the beach. In addition to a fixed salary, she earns a commission for each ice cream bar she sells. The table shows Michelle's total earnings, y, from selling x bars of ice cream:
 Ice Cream Sales and Earnings
 Number of Bars Sold (x) Total Earnings (dollars) (y)
 0
 50
 1
 56
 2 
 62
 3
 68
 Which equation best shows the relationship between x and y? (1 point)
 y = x + 50
 y = 6x + 50
 y = 6x + 56
 y = x + 56