Liz and Sara are making cookies for a bake sale. The graph shows the number of cookies that Liz bakes during a 5-hour period.
The equation y = 45x + 38 shows the number of cookies that Sara bakes during the same hours with y representing the number of cookies and x representing the number of hours.
Which statements about the cookie baking by the two girls are true?
Select each correct answer.
Sara had baked more cookies at the start of the 5 hours than Liz.
Sara bakes 45 cookies each hour.
Liz bakes 19 cookies each hour.
Liz bakes more cookies each hour than Sara.