SOLUTION: Mike needs at least a 75% average to pass his math course. The class contains 5 exams that are equally weighted. If he scored a 64%, 86%, 71%, and 90% on the first 4 tests, what sc

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Question 880215: Mike needs at least a 75% average to pass his math course. The class contains 5 exams that are equally weighted. If he scored a 64%, 86%, 71%, and 90% on the first 4 tests, what score does he need on the final test to earn at least a 75% in the class. Write and solve an inequality.
Answer by lwsshak3(11628) About Me  (Show Source):
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Mike needs at least a 75% average to pass his math course. The class contains 5 exams that are equally weighted. If he scored a 64%, 86%, 71%, and 90% on the first 4 tests, what score does he need on the final test to earn at least a 75% in the class. Write and solve an inequality.
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let x=score needed for a 75% average.
%28%2864%2B86%2B71%2B90%2Bx%29%2F5%29%3E-75
%28311%2Bx%29%2F5%3E-75
311+x≥375
x≥64