a. Give a written description of how you completed the grade calculations on your spreadsheet. Show and explain the functions/formulas used. You DO NOT need to include specific cell references, state the types of values used. For example: homework scores, category average, category weight... (6 points) b. What is the student's overall course percentage (round to the nearest tenth) and letter grade? (6 points) c. What are some advantages of using Excel with cell references to a data table compared to making a grade calculation table by hand with a handheld calculator? (2 points)