A high school math teacher has students maintain records on their study time and then compares their average nightly study time to the scores received on an exam. A random sample of the students showed these comparisons:

Study Time

(Nearest 5 min.)

Exam Score

Study time Exam

15 58

25 72

50 85

20 75

25 68

30 88

40 80

15 74

25 78

30 70

45 94

35 75

8. Make a scatter plot for the above information. Label the axes appropriately.

9. Draw a line of best fit

10. If a student studies 30 minutes, according to your line of best fit, what will his/her grade be?.