Alula has the following quiz scores: 17, 10, 9, 14, 16, 8 ,10, and 10. What must the sum of her next three quiz scores be in order to have an overall average of 14?
Total number of points required = 11 tests *14 points each = 154
Total points so far = 94
Points needed on last 3 tests = 154 - 94 = 60 = sum needed