Riley works for a phone comany at the mall stands. He gets paid 100 dollars for a day's work, plus a comission of $20 per every new line he opens. Which of the following equations represents the relationship between one day of Rileys pay, y, and the number of new lines started, x? y= 100x +20

y= 20x +100

x= 20y+ 100

y= 20x -100