Just need correct answer.

the graph shows jamie's science scores versus the number of hours spent doing science homework.

a graph titled jamies science scores shows hours of practice in a week on x axis and science scores on y axis. the x axis scale is shown from 0 to 5 at increments of 1, and the y axis scale is shown from 0 to 50 at increments of 5.the ordered pairs 0, 12 and 0.5, 18 and 1, 20 and 1.5, 24 and 2, 26 and 2.5, 28 and 3, 30 and 3.5, 35 and 4, 40 and 4.5, 46 and 5, 50 are shown on the graph. a straight line joins the ordered pairs 0,12 and 5,47.5.

what will most likely be jamie's approximate science score if he does science homework for 7 hours a week?

53 points
61 points
72 points
83 points

im thinking b