Run a regression analysis on the following data set, where yy is the final grade in a math class and xx is the average number of hours the student spent working on math each week.

hours/week x	Grade y
5	61
5	58
6	58.4
8	56.2
11	73.4
11	63.4
13	81.2
15	88
15	81
20	100

State the regression equation y=mx+by=mx+b, with constants accurate to two decimal places. 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.