Chart 2 75 76 77 A B 71 72 73 74 Current Selection Insert Shapes Britain, C Xfx D Brady, Jackso. E Shape Styles Pyle Shephe Willia G H + 78 10. In the grade book below, unlock the cells containing grades (in columns C, D, and E) to allow a teacher to change the grades when the spreadsheet is protected. Then, turn on protection (the "alarm") for this worksheet. 79 80 81 Student Test 1 Test 2 Test 3 Final Grade 82 Adams 89 92 98 93.0 83 Britain 92 81 76 83.0 84 Brady 85 63 78 75.3 85 Jackson 72 95 81 82.7 86 Jones 91 100 62 84.3 87 Pyle 100 81 81 87.3 88 Shepherd 83 78 74 78.3 189 Williams 91 97 761 88.0 90 91 92 193 914 96 Charting Financial Excercises