In the following data, a is the average number of hours the student spent working on math each week and y is the final grade in a math class. hours/week x Grade y 5 45 5 46 8 69.2 8 56.2 9 68.6 9 69.6 11 67.4 14 84.6 16 83.4 16 98.4 The line of best fit is y = 3.92 + 29.24. What is the predicted value for the final grade when a student spends an average of 12 hours each week on math? Grade = Round to 1 decimal place.