Jack and Kane buy an equal number of comic books every month. The following equation shows the number of comic books, y, that Jack has after x months: y = 2x + 15 The following graph shows the number of comic books, y, that Kane has after x months: Graph shows Months on x axis and Number of Comic Books on y axis. The scale on x axis is shown from 0 to 5 at increments of 1. The scale on y axis is shown from 0 to 21 at increments of 3. The title of the graph is Kanes Comic Books. A straight line is shown which joins the ordered pair 0, 9 and 4, 21 After 2 months, how many more comic books does Jack have than Kane? 1 2 4 7