Suppose a student had access to this information and wanted to predict their grade for an upcoming paper. Their paper is 3 pages long. A. Write out the equation of the regression line to predict grade from paper length. B. Predict the grade for this student whose paper is 3 pages long. C. If someone received a grade of 100 on their paper, predict the number of pages of their paper (this will involve multiple steps; ie find the equation of the regression line first, then plug in to make a prediction).'