Theresa earned scores of 88 points, 84 points, 88 points, and 91 points on four tests. What is the lowest score she can get on t he fifth test and still finish with an average score of 90 points?
2 answers:
D. 97 points.
90 x 5 = 450 ( total points for tests)
88 + 84 + 88 + 91 = 351 ( total of 4 tests)
450 - 351 = 99
if she scores a 97 she would have 88+84+88+91+97 = 448. 448/5 = 89.6 which would round to a 90
she needs at least a 97
Answer is D
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