On seven math tests, Sabrina Marie has the following scores: 82, 78, 88, 83, 91, 89, 94
a. Find Sabrina Marie's average score on these tests._____
b. If Sabrina Marie's were to receive a score of 77 on the eighth test, how would her average be affected? Explain how you got your answer.
c. What is the least score she would need on the eighth test to maintain the average she now has? Suppose her teacher does NOT round decimal averages up, for example, 81.5 = 81 (not 82). Explain your results.
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